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Hunter-Best [27]
4 years ago
10

What two pieces of information are needed to determine the diameter of a faraway object?

Physics
1 answer:
xxTIMURxx [149]4 years ago
4 0
Distance and angular size
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Two cars come to a stop from the same initial speed, one braking gently and the other braking hard. Which car converts more kine
My name is Ann [436]

Answer:

Both cars convert more kinetic energy to thermal energy.

Explanation:

Given that,

Two cars come to a stop from the same initial speed, one braking gently and the other braking hard.

We know that,

The conservation of energy :  

The energy of the system is always constant.

The energy can be change one form to another form.

So, we can say that when both cars come to a stop from the same speed, one braking softly and the other braking strongly then both cars convert more kinetic energy to thermal energy.

Hence, Both cars convert more kinetic energy to thermal energy.

8 0
3 years ago
1. What is the kinetic Energy of a 1500kg object moving at 21 m/s?
Wewaii [24]
The formula for working out kinetic energy is

=122

KE = kinetic energy
m = mass of a body
v = velocity of a body


kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

For the first one I think :
Answer:
KE = 330750 J

I’m not sure about the second one- sorry

The third is
Answer:
KE = 41454 J

Hope it helps and it is correct, sorry if it isn’t !
8 0
3 years ago
What machine would benefit from slowing lights speed
VARVARA [1.3K]

Answer: exotic medium can be engineered to slow light

Explanation:

8 0
3 years ago
Which two layers of Earth are mainly composed of iron and nickel? inner core outer core lower mantle upper mantle crust
stich3 [128]
Inner core and outer core
3 0
4 years ago
Read 2 more answers
Rae has just heard a loud crash from her garage. The impact of the sound wave bouncing against her eardrum sets off a chain reac
matrenka [14]

Answer:

Hammer

Anvil

Stirrup

Explanation:

The three tiny bones in the ear drum are:

Hammer, this is also known as malleus and it is attached to the eardrum

Anvil, this is also called incus and it found with the chain of bones in the middle ear.

Stirrup, also known as stapes and it attached to the membrane covered opening that connects the middle ear with the inner ear.

7 0
3 years ago
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