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Cloud [144]
3 years ago
12

What does it mean to say energy is conserved

Physics
1 answer:
zlopas [31]3 years ago
5 0
This means that energy cannot be destroyed or created. They can be converted to other types of energy but the energy before and after will be constant.
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Explain the process of how clouds form.
erica [24]

Answer clouds from when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which are the basis of clouds.

Explanation:

4 0
3 years ago
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Which is a device made from a coil of wire that carries a current and produces a magnetic field?
slega [8]
A device made from a coil of wire that carries a current and produces a magnetic field is called a <span>solenoid. </span><span>✅
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Answer: Letter B

Hope that helps. -UF aka Nadia</span>
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3 years ago
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2. Which energy sources (input) cause the solar panels to generate electrical energy?
Daniel [21]

Answer:

Explanation:

<h2>In the case of artificial photosynthesis, the energy input used to generate the required electricity is solar energy. The optical solar energy is converted into electricity inside the material system using the same scientific principles as PV modules.</h2><h2>Hope it will help</h2>
7 0
4 years ago
An 8 kg mass moving at 8 m/s collides with a 6 kg mass
steposvetlana [31]

Answer:

10 m/s

Explanation:

Momentum before collision = momentum after collision

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(8 kg)(8 m/s) + (6 kg)(6 m/s) = (8 kg)(5 m/s) + (6 kg) v

64 kg m/s + 36 kg m/s = 40 kg m/s + (6 kg) v

60 kg m/s = (6 kg) v

v = 10 m/s

3 0
4 years ago
Froghoppers may be the insect jumping champs. These 6-mm-long bugs can spring 70 cm into the air, about the same distance as the
earnstyle [38]

Answer:

This is about 176 times the weight of the froghopper.

Explanation:

the grasshopper converts kinetic energy into earth gravitational potential energy

u=mgh

u=12*10^-3*9.8*0.7

=8.23*10^-2

using the Work energy principle

equating the kinetic energy to the potential energy

k +U+w=K2+u2

K+0+0=0+U2

k=8.23*10^-2

force exerted by the grasshopper on the round will be given by tis equation

(F-mg)Ycos\alpha=k

(F-12*10^-3*9.8)*0.004cos 0=8.23*10^-2

F=20.7N

from newtons third law of motion, action and reaction are equal and opposite

F=-20.7N

comparing the forces by the two bodies

F:mg

-20.7:-12*10^-3*9.8

the magnitude of the force applied by the grasshopper is found to be 176 times the gravitational force

8 0
3 years ago
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