. Draw a Cartesian coordinate system on a sheet of paper. On this Cartesian coordinate system, draw each vector to scale, starting at the origin. (a) Dd > 5 8.0 cm [S 15° E] (b) Dd > 5 5.7 cm [N 35° W] (c) Dd > 5 4.2 cm [N 18° E]

Answer:

The moon has no atmosphere

Explanation:

The temperatures on the surface of the Moon vary much more than those on Earth because the moon has no atmosphere (third answer in the list), and therefore there are no molecules that could retain residual heat and make the change from day to night a softer transition.

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.

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.

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.

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.

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Answer:

Day when I workout I feel I have more energy, but on days when I don't I feel sluggish and tired

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 .

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:

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.

Answer:

3

Explanation:

Trust me its the right answer

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:

Answer:

The gas will change to a liquid

Explanation:

Basically condensation happens

Answer:b

Explanation:

took test, might be wrong

Answer:

C ) Extreme temperature differences in summer and winter

Explanation:

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Answer:

C. sodium combines with chlorine to form sodium chloride

Explanation:

Answer:

C. sodium combines with chlorine to form sodium chloride.

Explanation:

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.

answer:

cardiovascular endurance

muscular strenght

muscular endurance

body composition

flexibility

Explanation:

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Answer:

Radio

Explanation:

As the stonger the waves get the more compressed they get

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.

Answer:A

Explanation: it’s a covalent bond plus i just took mines

Answer:

radio waves

Explanation:

Answer:

the answer is A radio waves

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."

Answer:

E =  = 17

Explanation:

We will use the equation E =  We plug in our known values

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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Answer:

cellular respiration

Explanation:

Answer:

Yes please

Explanation:

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.

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

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:

Scientific data:

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

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