Answer:
The answer is below
Explanation:
Plants that grow among many tall trees in a dense forest could adapt so that they could get enough air and water through the following means:
1. By becoming climbers. Here they climb up the nearby trees to get more air and sunlight.
2. Plants grow leaves that have pointed tips. This allows the passage of water in the plant's leaves without causing damage.
3. Some plants grow as epiphytes, where they grow on big trees' canopy
Which force below does the most work? All three displacements are the same. The 10 N force. The 8 N force The 6 N force. They all do the same work. Sin60º = 0.87 cos60º = 0.50
THe question is missing parts. Here is the complete question.
Which force below does the most work? All three displacements are the same.
A. The 10 N force
B. The 8 N force
C. The 6 N force
D. They all do the same work
note: sin60° = 0.87
cos60° = 0.5
Answer: C. The 6 N force
Explanation: Work (τ) is the transfer of energy to or from a system by moving an object.
Work is dependent of the force we applied to the object, the displacement it creates and the angle between the force and the displacement. In other words:
[tex]\tau = F.d.cos \theta[/tex]
and its unit is joule [J].
For the 10 N force, angle is 90°. Cosine of 90° is 0. Therefore:
[tex]\tau = 10.d.cos 90[/tex]
[tex]\tau = 0[/tex]
For the 8 N force, angle is 60°. Then:
[tex]\tau = 8.d.cos 60[/tex]
[tex]\tau = 8d(0.5)[/tex]
[tex]\tau = 4d[/tex]
For the 6 N force, angle is 0, because vectors displacement and force are pointing to the same direction:
[tex]\tau = 6.d.cos 0[/tex]
[tex]\tau=6d(1)[/tex]
[tex]\tau=[/tex] 6d
Comparing the work done, the force that does the most work is force 6N.
Please answer fast
A 50 kg boy jumps off the front of a 1.5 kg skateboard moving forward. Find the skateboard's velocity
immediately after the boy jumps, assuming that the skateboard's initial velocity is 3.5 m/s and the boy's
velocity when jumping off the front is 5 m/s?
Answer:
The speed is 1.35 m/s
Explanation:
(m1+m2) vi= m1+m2v2
(50+1.5) (3.5)=50 (5+v2) +1.5 v2
180.25= 250+ 51.5 v2
180.25- 250+ 51.5 v2
-69.75= 51.5 v2
v2= -1.35 m
What is the electric field created by a voltage of 85 V at a distance of 5.0 m?
Answer:
E = = 17
Explanation:
We will use the equation E = We plug in our known values
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the farther you live from an ocean, the more likely you will have...
A ) Little to no temperature change from summer to winter.
B ) A tropical climate
C ) Extreme temperature differences in summer and winter
D ) An Arctic climate
Answer:b
Explanation:
took test, might be wrong
Answer:
C ) Extreme temperature differences in summer and winter
Explanation:
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It will still move
11. Would you expect sound to travel faster in a solid, liquid, or gas? Explain.
Light from the sun travels in electromagnetic waves. Which of these statements describe electromagnetic waves?
Complete Question:
Light from the sun travels in electromagnetic waves. Which of these statements describe electromagnetic waves? Choose the 3 that apply.
Group of answer choices.
a) consist of transverse wave patterns.
b) can move through a vacuum.
c) caused by a vibration in a medium.
d) consist of longitudinal wave patterns.
e) requires a medium, such as air, to travel.
f) made of vibrating electric and magnetic fields.
Answer:
a) consist of transverse wave patterns
b) can move through a vacuum
f) made of vibrating electric and magnetic fields
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Generally, the most commonly used electromagnetic wave technology in telecommunications is light and radio waves. Light from the sun travels in electromagnetic waves.
The statements which describe electromagnetic waves are;
I. It consist of transverse wave patterns.
II. It can move through a vacuum.
III. It is made of vibrating electric and magnetic fields.
how can hand tools help every technician for their safety in doing hard servicing activities
Answer: Hand tools are necessary for daily activities.
Explanation:
The hand tools are useful for day to day activities they aid in pouring substances, holding things, mixing substances, cleaning and for other purposes. In a chemical laboratory the hand tools like test tube holders can help in holding the chemicals. In a medical laboratory the forceps can be useful in holding and cutting the sections without causing any harm to the hands. Hand tools avoid the direct contact with the microorganisms in medical laboratory thus protect against infections. Hand tools aid in surgical operations and they help in avoiding direct contact with the blood vessels and organs preventing contamination and infections.
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Answer:
Radio
Explanation:
As the stonger the waves get the more compressed they get
Refraction occurs when a wave changes______ as it passes through a different medium.
The electric circuit below consists of a battery, a switch, and three light bulbs.
What will happen if the switch is closed and Bulb A is removed?
a. Bulbs B and C will go out.
b. Bulbs B and C will remain lit.
c. Bulb B will remain lit, and Bulb C will go out.
d. Bulb C will remain lit, and Bulb B will go out.
Answer :B: Bulbs B and C will remain lit.
If the switch is closed and Bulb A is removed, Bulbs B and C will remain lit. Option B is correct.
What is an electric bulb?An electric bulb is a gadget that uses electricity to create visible light. It is the most popular type of artificial lighting and is necessary for modern society.
The light bulb is connected to a switch in a parallel configuration. The switch is open, which means there will be a lot of resistance and no current will flow via this route.
Across the parallel connection, the battery would create the same potential difference. Because the current would not go via the open switch, it would instead flow through the light bulb, causing it to illuminate.
If the switch is closed, the circuit get completed, hence the current starts flowing in the circuit and the bulb start glowing.
When one bulb in a series circuit is removed out, the rest of the bulbs stop shining and shut off.
But if bulb A is removed,in that condition the only connected bulb can glow. If the switch is closed and Bulb A is removed, Bulbs B and C will remain lit.
Hence, option B is correct.
To learn more about the electric bulb, refer to the link;
brainly.com/question/4723473
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An object is accelerating at a constant rate due to a force being applied. What can be done to the force to decrease the objects acceleration?
lower the force or add an opposing Force
which health related components give you a normal or an above average classification?
answer:
cardiovascular endurance
muscular strenght
muscular endurance
body composition
flexibility
Explanation:
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Amoeba have mitochondria. What is the name of the process that breaks down glucose sugar into usable energy for the cell? (2 words)
Answer:
cellular respiration
Explanation:
A projectile of mass 0.2 kg and an initial velocity of 50 m/s collides with the end of a blade attached to a turbine. The rotational inertia of the turbine is 12.5 kg⋅m2 . Assume the loss of energy of the projectile in the collision is completely transferred to the blades, causing them to spin. If the final rebound velocity of the projectile after hitting a turbine blade is −25 m/s , which of the following is most nearly the rotational velocity of the turbine after the collision?
Answer:
5.5 rad/sec
Explanation:
Answer:
5.47 rad/s
Explanation:
We can solve this problem using the principle of conservation of energy and angular momentum.
First, let's find the initial kinetic energy of the projectile:
K1 = (1/2) * m * v1^2
= (1/2) * 0.2 kg * (50 m/s)^2
= 250 J
where v1 is the initial velocity of the projectile.
Next, let's find the final kinetic energy of the projectile:
K2 = (1/2) * m * v2^2
= (1/2) * 0.2 kg * (-25 m/s)^2
= 67.5 J
where v2 is the final velocity of the projectile after the collision.
The loss of energy in the collision is:
ΔK = K1 - K2
= 187.5 J
This energy is transferred to the blades, causing them to spin. Let's assume that all of this energy is converted to rotational kinetic energy of the turbine.
The final rotational kinetic energy of the turbine is:
K_rot = (1/2) * I * ω^2
where I is the moment of inertia of the turbine and ω is the final rotational velocity of the turbine.
Using the conservation of energy, we can equate the loss of kinetic energy in the collision to the gain in rotational kinetic energy of the turbine:
ΔK = K_rot
187.5 J = (1/2) * 12.5 kg m^2 * ω^2
ω^2 = (2 * 187.5 J) / (12.5 kg m^2)
ω^2 = 30
ω = 5.47 rad/s
Therefore, the rotational velocity of the turbine after the collision is 5.47 rad/s.
In a Millikan experiment, a droplet of mass 4.7 x 10^-15 kg floats in an electric field of 3.20 x 104 N/C.
a. What is the force of gravity on this droplet?
b. What is the electric force that balances it?
c. What is the excess charge?
d. How many excess electrons are there on this droplet?
Answer:
a. The force of gravity on the droplet is approximately 4.606 × 10⁻¹⁴ Newtons
b. The electric force that balances the force of gravity is approximately -4.606 × 10⁻¹⁴ Newtons
c. The excess charge is approximately -1.439375 × 10⁻¹⁸ C
d. There are approximately 9 excess electrons on the droplet
Explanation:
The parameters of the Millikan experiment are;
The mass of the droplet, m = 4.7 × 10⁻¹⁵ kg
The electric field in which the droplet floats, E = 3.20 × 10⁴ N/C
a. The force of gravity on the droplet, F = The weight of the droplet, W = m × g
Where;
g = The acceleration due to gravity ≈ 9.8 m/s²
W = 4.7 × 10⁻¹⁵ kg × 9.8 m/s² = 4.606 × 10⁻¹⁴ Newtons
∴ The force of gravity on the droplet = W = 4.606 × 10⁻¹⁴ Newtons
b. The electric force that balances the force of gravity, [tex]F_v[/tex] = -W = -4.606 × 10⁻¹⁴ Newtons
c. The excess charge is given as follows;
[tex]F_v[/tex] = q·E
∴ The electric force that balances the force of gravity, [tex]F_v[/tex] = q·E = -4.606 × 10⁻¹⁴ N
q·E = -4.606 × 10⁻¹⁴ N
q = -4.606 × 10⁻¹⁴ N/E
∴ q = -4.606 × 10⁻¹⁴ N/(3.20 × 10⁴ N/C) ≈ -1.439375 × 10⁻¹⁸ C
The excess charge, q ≈ -1.439375 × 10⁻¹⁸ C
d. The charge of one electron, e = 1.602176634 × 10⁻¹⁹C
The number of excess electrons in the droplet, n, is given as follows;
n = 1.439375 × 10⁻¹⁸ C/(1.602176634 × 10⁻¹⁹C) = 8.98387212405 electrons
∴ n ≈ 9 electrons.
a. The force of gravity on this droplet is [tex]4.606 \times 10^{-14} \;Newton[/tex]
b. The electric force that balances this droplet is [tex]-4.606 \times 10^{-14} \;Newton[/tex]
c. The excess charge is equal to [tex]-1.44 \times 10^{-18}\;C[/tex]
d. The number of excess electrons that are on this droplet is 9.0 electrons.
Given the following data:
Mass of droplet = [tex]4.7 \times 10^-15 \;kg[/tex]Electric field = [tex]3.20 \times 10^4 \;N/C.[/tex]Scientific data:
Acceleration due to gravity = 9.8 [tex]m/s^2[/tex]Charge of electron = [tex]1.6 \times 10^{-19}\;C[/tex]The parameters of an electric field.a. To calculate the force of gravity on this droplet:
The force of gravity on this droplet is equal to the weight of the droplet and it would be calculated by using this formula:
[tex]F = mg\\ \\ F = 4.7 \times 10^{-15} \times 9.8\\ \\ F = 4.606 \times 10^{-14} \;Newton[/tex]
b. To calculate the electric force that balances this droplet:
The electric force that balances this droplet is equal to the negative weight of the droplet.
[tex]F_e = -mg = -4.606 \times 10^{-14} \;Newton[/tex]
c. To calculate the excess charge:
Mathematically, the excess charge is given by this formula:
[tex]q=\frac{F_e}{E} \\ \\ q=\frac{-4.606 \times 10^{-14}}{3.2 \times 10^4} \\ \\ q=-1.44 \times 10^{-18}\;C[/tex]
d. To calculate the number of excess electrons that are on this droplet:
[tex]n=\frac{1.44 \times 10^{-18}}{1.6 \times 10^{-19}} [/tex]
n = 9.0 electrons
Read more on electric field here: https://brainly.com/question/14372859
What differences do you notice in your body and attitude on the days that you move/exercise compared to the days that you don't?
Answer:
Day when I workout I feel I have more energy, but on days when I don't I feel sluggish and tired
Why did you need a permanent magnet? What do you think would happen if you increased the
number of permanent magnets? (dc motor)
Permanent magnets are important for their industrial uses especially when it comes to power generation and electric motors. The induction process for turbines and generators needs permanent magnets to turn mechanical motion into energy.
Exposing magnetized magnets to opposing external fields produces a demagnetizing effect. This effect is most apparent in permanent magnet materials having a non-linear demagnetization curve, such as Alnico. ... Other factors such as SHOCK and VIBRATION have very little effect on today's permanent magnet materials.
Kate is pulling her doll in a wagon. Which arrow shows us the force of Kate pulling the wagon?
Answer:
3
Explanation:
Trust me its the right answer
Which situation would create a field like the one shown here?
A. interaction between two magnetic south poles
B. interaction between two magnetic north poles
C. interaction between a south pole and a north pole
D. interaction between a magnetic south pole and a copper bar
Answer:
C
Explanation:
We don't need to know which pole is in the bars. We just need to see that the lines of the magnetic field, represented by the iron filings, are leaving one bar and joining another - we don't need to know which bar is. To do that, we should define what is the North Pole, where the lines leave, and what is the South Pole, where the lines go.
If we had equal poles, the lines would be pointing out the bars like that <<<< BAR >>>>>
<<<<<BAR>>>>>
not joining one or another.
A change in the thermal energy can cause other changes to occur in the
substance. Which of the following could occur as a result of decreasing
the thermal energy of a gas? *
Answer:
The gas will change to a liquid
Explanation:
Basically condensation happens
What is the electrical energy of a 750 W waffle iron that is used for 15 min *
Answer:
675 kj
Explanation:
Energy = power × time
Energy = 750 × 15min
Energy = 750× 15 × 60 sec
Energy = 675000 joules = 675 kilo joules
How do the electrons move in a metal that is magnetized?
Answer:
A attractive field pulls and pushes electrons in certain objects closer to them, making them move. Metals like copper have electrons that are effortlessly moved from their circles. In case you move a magnet rapidly through a coil of copper wire, the electrons will move - this produces power.
When you increase the volume with constant temperature, what happens
to the pressure?
- increases
- decreases
- stays the same
Answer:
Pressure increases
Explanation:
"Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure."
Is the answer is right?
Answer:
Yes please
Explanation:
3. How did Kepler's work influence Newton?
Johannes Kepler and his laws were a great influence on Isaac Newton. ... Newton used his laws of gravity and motion to derive Kepler's laws and show that the motion of the planets could be explained using mathematics and physics.
Answer:
Johannes Kepler and his laws were a great influence on Isaac Newton. ... Newton used his laws of gravity and motion to derive Kepler's laws and show that the motion of the planets could be explained using mathematics and physics.
Explanation:
Two people travel from Columbus to Cleveland, one by car at an average velocity of 90km/h, and one by plane at an average velocity of 300km/h. Can their displacements be equal
Answer:
Explanation:
Yes , their displacement may be equal .
Suppose the displacement is AB where A is starting point and B is end point .
The car is covering the distance AB by going from A to B on straight line . On the other hand plane goes from A to C , then from C to D and then from D to B . In this way plane reaches B from A on a different path which is longer than path of the car . In the second case also displacement of plane is AB . In the second case distance covered is longer but displacement is same that is AB .
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what factors affect electrostatic force?
Answer:
The first factor is the amount of charge on each object. The greater the charge, the greater the electric force. The second factor is the distance between the charges. The closer together the charges are, the greater the electric force is.
Explanation:
as the broadcaster speakers the sound wave being produced by
Answer:
In electronics and telecommunications a transmitter or radio transmitter is an electronic device which produces radio waves with an antenna. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna
Explanation:
In which reaction are the atoms of elements rearranged?
A. a neutron fuses with plutonium-239 to form plutonium-240.
B. two isotopes of hydrogen fuse to form helium.
C. sodium combines with chlorine to form sodium chloride.
D. uranium-235 breaks apart into krypton, barium, and three neutrons.
Answer:
C. sodium combines with chlorine to form sodium chloride
Explanation:
Answer:
C. sodium combines with chlorine to form sodium chloride.
Explanation:
state why a lubricant reduces friction in the bearings of moving part of a machine
Answer:
Due to reduced friction of a polished ,smooth slide, children can slide down easily. When oil or grease is applied between the moving parts of a machine ,a thin layer of oil or grease is formed between the two rubbing surfaces. ... This friction is reduced and movement becomes smooth.
Explanation:
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