Answer:
Experiments have shown that a magnetic Just sitting next to a wire produced no current flow through that wire. However, If the magnet is brought close to the coil of wire or a relative motion is established between the magnet and the wire then a current is induced in the wire. The closer the magnet moves, the more the Induced current.
Explanation:
A magnet sitting next to a wire would not induce a current in the wire because the magnetic lines of force of the magnet are not in relative motion to the wire.
If you move a magnet close to a wire, the electrons will move thus generating current.
the letter R in the world Warm reminds you that warm air does what
When a warm air mass collides with a cold air mass, the warm air mass rises above the cold air mass leading too:
A) Sunny skies
B) Global warming
C) The formation of clouds and rain
D) Volcanic eruptions
Answer: It leads to a front. A front is.., I don't know how to explain it, so I'll add a picture. Fronts are made out of clouds and usually bring rain. So the answer is C: The formation of clouds and rain.
Explanation:
PLEASE PLEASE PLEASE PLEASE PLEASE HELP!!!!!!!!
A car traveled 88 km in 1.0 hour, 91 km in the next 2.0 hours, and then 76 km in 1.0 hour before reaching its destination. What was the car’s average speed?
Answer:
64 km/h
Explanation:
How does a computer process data? *
A.Computer processes combinations of 1s (on) and Os (off) as a form a code and
translates it into data.
B.Computer processes combinations of base 10 numbers using different amounts of
voltage and translates it into data
C.Computer processes number of lights on to tally and translates it into data
D. All of the above
The correct answer D: all of the above
Newton's second law predicts that when a nonzero net force is applied to a box, the box will
A. move at constant velocity.
B. move at constant speed.
c. accelerate.
D. do all of the above.
Answer:
C
Explanation:
this is because newton's second law states that if a resultant force acts on an object, then it will accelerate in the direction of the resultant force
so if there is a non zero resultant force, it means that there is a resultant force, so for every resultant force, there is acceleration
since the equation states it
F = ma
hope this helps
please mark
A gold bar contains 63.0 mol of gold, Au(s). How many atoms of gold are in the bar?
Answer:
63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold
Explanation:
There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)
What part of the cell uses the glucose from the breakdown of carbohydrates to make ATP?
a]chloroplast
b]ribosome
c]cell membrane
d]mitochondria
Gravity always acts towards the center of the earth. TRUE OR FALSE?
Answer:
On Earth, gravity pulls all objects to Earth's center. The Law of Universal Gravitation states that all objects in the universe attract each other, therefore gravity acts on all objects in the universe. Although gravity affects all things, the attraction between two objects depends on a few things.
Explanation:
Answer:
T
Explanation:
The Earth is one massive object whose gravitational force is very strong. Thus gravity of Earth attracts all objects towards the centre of Earth.
How are rocks weathered as in this example seen here?A) The rocks change their composition. B) The rocks are being chemically weathered by the water. C) Freezing and thawing of water breaks the rocks into pieces. D) Hot lava is pushing on the rock and breaking it into pieces.
Answer:
Is there a picture-
Explanation:
The rock weathered as in this example seen here is freezing and the thawing of water breaks the rocks into pieces. The correct option is C).
What is rock weathering?By interacting with water, atmospheric gases, and living beings, weathering is the disintegration of rocks, soils, minerals, as well as wood and man-made objects. In contrast to erosion, which involves the movement of minerals and rocks caused by forces like water, waves, and gravity, weathering takes place in its natural environment.
The two different kinds of weathering processes are chemical aging and physical aging. The mechanical deterioration of rocks brought on by heat, rain, ice, or other elements is referred to as physical weathering.
Chemical weathering is the interaction of rocks and soils with water, atmospheric impacts, and biologically generated substances. Physical weathering is mostly caused by water, while oxygen molecules in the atmosphere and biological activity also play a part.
Therefore, the correct option is C) Freezing and thawing of water break the rocks into pieces.
To learn more about rock weathering, refer to the link:
https://brainly.com/question/28755105
#SPJ5
The question is incomplete. Your most probably complete question is given below: the image is added.
A 1500 kg car accelerates at 3 m/s^2. What is the net force acting on the car?
Answer:
4500N
Explanation:
Force =mass into acceleration
So 1500 into 3 you will get 4500
i truly need help with these 10 questions , it soo late and i only have 2 days too turn it in please anybody help me !!
Can scientific laws be changed by a vote
Answer:
No, because a scientific law is always absolutely true, no matter what a vote could not change a scientific law. People can vote how fast the speed of light is per second, but light will always be the speed it is no matter what.
How much electricity is used to boil 600 g of water if the kettle has a power of 1500 W? The water boiled for 3 minutes and 9 seconds. Water density is 1000 kg/m3, specific heat of water is 4200 J/(kg· oC).
Answer:
The electrical energy consumed in boiling the water is 0.0788 kWh
Explanation:
Given;
mass of the water, m = 600 g = 0.6 kg
power rating of the kettle, P = 1500 W = 1.5 kW
specific heat capacity of water, c = 4,200 J/kg⁰C
density of water, = 1000 kg/m³
time taken to boil the water, t = 3 mins + 9 s = (3 x 60s) + 9 s = 180 s + 9 s = 189 s = [tex]189 \ s \times \frac{1 hr}{3.600 \ s} = 0.0525 \ hr[/tex]
The electrical energy consumed in boiling the water is calculated as;
E = P x t
E = 1.5 kW x 0.0525 hr
E = 0.0788 kWh
Therefore, the electrical energy consumed in boiling the water is 0.0788 kWh
Describe how an electric current flows through a conductor. ( use human being as a wire )
Answer:
human body contain 80% water and water is a good condition of current because our body fluid contain different type of salt that increase the current conductivity
Temperature and kinetic energy have a________
relationship.
How much net force is acting on a 50 kg falling object that has reached terminal velocity?
0 N
50 N
100 N
500 N
Answer:
Net force would be zero
Explanation:
It's still receiving a gravitational force of almost 500 Newtons downward, but because it has reached terminal velocity, that means it's also receiving an opposite and roughly equal force due to friction with the air. The two balance out for a total of zero.
Answer:
0 N
Explanation:
HELP
as shown in the diagram, points p,q, and r are located near a positively charged object.
name one property you know about LIGHT. Explain.
Answer:
The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.
Explanation:
Light is made of particles called photons, bundles of the electromagnetic field that carry a specific amount of energy. With sufficiently sensitive experiments, you can count photons or even perform measurements on a single one. Researchers have even frozen light temporarily.
Hope this Helps :)
A 8.73-g bullet is moving horizontally with a velocity of 345 m/s, where the sign indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The bullet passes completely through the first block (an inelastic collision) and embeds itself in the second one, as indicated in part b. Note that both blocks are moving after the collision with the bullet. The mass of the first block is 1201 g, and its velocity is 0.714 m/s after the bullet passes through it. The mass of the second block is 1606 g. (a) What is the velocity of the second block after the bullet imbeds itself
Answer:
v₃ = 1.334 m/s
Explanation:
This problem can be solved using the law of conservation of momentum:
[tex]m_{1}u_{1} + m_{2}u_{2} + m_{3}u_{3} = m_{1}v_{1} + m_{2}v_{2} + m_{3}v_{3}\\[/tex]
m₁ = mass of bullet = 8.73 g = 0.00873 kg
m₂ = mass of first block = 1201 g = 1.201 kg
m₃ = mass of second block = 1606 g = 1.606 kg
u₁ = initial speed of bullet = 345 m/s
u₂ = initial speed of first block = 0 m/s
u₃ = initial speed of second block = 0 m/s
v₁ = final speed of bullet = v₃ (since the bullet is embedded in second block)
v₂ = final speed of first block = 0.714 m/s
v₃ = final speed of second block = ?
Therefore,
[tex](0.00873\ kg)(345\ m/s)+(1.201\ kg)(0\ m/s)+(1.606\ kg)(0\ m/s)=(0.00873\ kg)(v_{3})+(1.201\ kg)(0.714\ m/s)+(1.606\ kg)(v_{3})[/tex]
[tex]3.0118\ kg.m/s - 0.8575\ kg.m/s = (1.6147\ kg)(v_{3})\\\\v_{3} = \frac{2.1543\ kg.m/s}{1.6147\ kg} \\[/tex]
v₃ = 1.334 m/s
What are the energy transformations that occur during a roller coaster ride? 1 paragraph
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. Roller coasters rely on gravity to take them to the end of the track. This involves two types of energy, potential energy and kinetic energy.
Explanation: my mom told me lol ..
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy.
Explanation:
That's gonna help right?
Which of the following is an uncontrollable risk factor for myocardial infarction?
weight gain
age
poor diet
cigarette smoking
In aluminum, the speed of sound is 5100 m/s What the wavelength a sound wave of middle C at 264 Hz traveling through aluminum?
Answer:
19.32
Explanation:
the wavelength formula is speed divided by frequency
speed = 5100m/s
frequency = 264Hz
so wavelength = 5100 m/s / 263 Hz
= 19.32
If it is the first day of Winter in the Northern Hemisphere, what day is it in the Southern Hemisphere?
Answer:summer
Explanation:
Answer:
first day of summer
Explanation:
A light beam with a 70° angle of incidence travels through a medium with an index of refraction of 1.8. The light enters a second medium and has an angle of refraction of 37°. What is the index of refraction of the second medium?
Answer:
Explanation:
For refraction , the formula is
sin i / sin r = μ₂ / μ₁
where light is travelling from medium 1 to 2 having refractive index of μ₁ and μ₂ . Angle of incidence in medium 1 is i and angle of refraction in medium 2 is r .
Here i = 70°, r = 37°
μ₁ = 1.8 ,μ₂ = ?
sin70 / sin 37 = μ₂ / 1.8
.939 / .602 = μ₂ / 1.8
1.56 = μ₂ / 1.8
μ₂ = 2.81 .
The value of refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
What will be the refractive index?Every material has a different refractive index. The refracted index of any material shows that the light is refracted by how much angle.
So like for water its value will be different also for glass its value will be different.
Now it is given in the question that
Angle of incidence [tex]i=70^o[/tex]
Refractive index of the first medium [tex]\mu_1=1.8[/tex]
Angle of refraction [tex]r=37^o[/tex]
Now from snells law
[tex]\dfrac{Sin \ i}{Sin \ r} = \dfrac{\mu_2}{\mu_1}[/tex]
[tex]\dfrac{Sin70}{Sin37} = \dfrac{\mu_2}{1.8}[/tex]
[tex]\mu_2= \dfrac{Sin70\times1.8}{Sin37}[/tex]
[tex]\mu_2=2.16[/tex]
Thus the value of the refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
To know more about the Refractive index follow
https://brainly.com/question/10729741
The diagram does not represent a real electric field because the field lines__
NEED ANSWERS NOW
Answer:
cross at many points
Explanation:
According to the diagram it does not shows the real electric field as the electric field does not intersect with each other but according to the given diagram many lines are intersected with each other
So the correct option is C as it would be crossed at many points
Hence, the same would be relevant
Mr. LaCosta is making a circular garden for our outdoor green space. The garden has a diameter of 11m. He has to buy plastic fencing to put around the edge. The fencing costs $5.75/m. What would be the total cost before taxes?
Answer:
The total cost before taxes to fence the garden is approximately $198.71
Explanation:
The given parameters for the garden are;
The diameter of the garden, D = 11 m
The cost of the fencing, UnitC = $5.75/m
The circumference of a circle, C = π·D
Therefore, the perimeter of the garden, C = π × 11 m ≈ 34.5575 m
The total cost before taxes to fence the garden, T = C × UnitC
∴ The total cost before taxes to fence the garden, T, is given as follows;
T ≈ 34.5575 m × $5.75/m ≈ $198.71
The total cost before taxes to fence the garden, T ≈ $198.71
What is the electric resistance of a copper wire 0.65 m long with a diameter of 2 mm?
To calculate resistance, we will use the formula:
R = ρl / A
where ρ(rho) is the resistivity of the material, l is the length of the wire and A is the cross-sectional area
We are given:
Length of wire (l) = 0.65 m
Diameter of wire (d) = 2 mm
Material of wire: Copper
Some important conversions:
- radius of the wire = diameter/2
radius = 2 mm/2 = 1 mm OR 1 * 10⁻³m
Calculating the cross-sectional area:
Cross-sectional area is the area of the circle at the end of the wire.
Cross-sectional area = π(r²)
Area = π(1 * 10⁻³)² [replacing the value of r]
Area = π * 10⁻⁶ m²
Calculating the resistance:
using the formula mentioned before:
R = ρl / A
R = [tex](1.7 * 10^{-8}ohm*m ) * \frac{0.65 m}{3.14 * 10^{-6}m^{2}}[/tex] [resistivity of copper = 1.7 × 10⁻⁸ Ωm]
R = 3.52 * 10⁻³ (approx)
Answer:
3.5 × 10⁻³ Ω
Explanation:
The resistance of a conductor is calculated by the formula:
[tex]\displaystyle R=\rho \cdot \frac{l}{A}[/tex] where R = electric resistance (Ω), ρ = resistivity (Ω · m), l = length of the wire (m), A = area of the cross-section of the wire (m²)Let's start by converting the diameter of the copper wire to meters.
2 mm → .002 mSince we want the radius of the cross-section, we will divide .002 m by 2.
.002/2 = .001 mThe radius of the copper wire is .001 m. We can calculate the area of the circular cross-section by using the formula:
[tex]A=\pi r^2[/tex] [tex]A= \pi (.001)^2[/tex] [tex]A= \pi \cdot 10^-^6[/tex]The area of the cross-section is π · 10⁻⁶ m².
The length of the wire is 0.65 m long. We do not have to convert units for the length of the wire since it is already in the SI units: meters.
Assuming the copper wire is at 20°C, we know that its resistivity is 1.7 · 10⁻⁸ Ω · m.
Using these three variables, we can solve for R in the formula for electric resistance.
ρ = 1.7 · 10⁻⁸ Ω · m l = 0.65 m A = π · 10⁻⁶ m²Substitute these values into the equation.
[tex]\displaystyle R=\rho \cdot \frac{l}{A}[/tex] [tex]\displaystyle R=(1.7 \cdot 10^-^8\ \Omega \cdot \text{m}) \cdot \frac{0.65 \ \text{m}}{(\pi \cdot 10^-^6 \ \text{m}^2 )}[/tex] [tex]\displaystyle R=\frac{(1.105 \cdot 10^-^8 \ \Omega \cdot \text{m}^2)}{(\pi \cdot 10^-^6 \ \text{m}^2)}[/tex] [tex]R=.3517324242 \cdot 10^-^2 \ \Omega[/tex] [tex]R=.003517324242 \ \Omega[/tex]Notice how the unit m² cancels out, leaving us with Ω (units of electrical resistance).
The electric resistance of a copper wire 0.65 m long with a radius of .001 m is .0035 ohms (Ω), or 3.5 × 10⁻³ Ω.
what is the average speed of an athlete who runs 1500m in 4minuites
Answer:
375m per minute
Explanation:
Just divide 1,500 by 4 and you will get your answer!
Answer:
375 meters per minute
Explanation:
it is that much
What are some possible sources of motion that could be harnessed for a generator?
Explanation:
There are multiple other sources of kinetic energy that can be harnessed for electricity. Wind-powered turbines can create energy through windmills or wind-power generators. Wind energy is harnessed into kinetic energy by turning panels that are designed and angled to catch as much wind as possible.
Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.