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Archy [21]
2 years ago
14

2. An egg rolls off the kitchen counter with a velocity of 4m/s. If

Physics
1 answer:
-Dominant- [34]2 years ago
6 0

Answer:

800m/s

Explanation:

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A ball is thrown straight up in the air and just before it lands it is travelling -47.5 m/s. How long was the ball in the air?
Setler [38]
Use v = u + at
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6 0
3 years ago
Two identical positive charges are placed near each other. At the point halfway between the two chargesTwo identical positive ch
Nitella [24]

Answer:The electric field is zero and the potential is positive.

Explanation:

Two identical positive charges are separated by a certain distance and midway between charges two identical positive charges are placed near each other.

So the Electric field at midway is zero because the electric field due to both charges add up to give zero electric field.(because they point in opposite direction)

Potential is scalar quantity and charges are positive so they add up to give potential.

7 0
3 years ago
Explain the forces that keep a rock balanced on a tiny pedestal. Please help me with this!
SashulF [63]
Normal force for the rock because that makes an object stable at its position.
static friction because micro-welts hold its particle on its position so it doesn't change in position by a potential energy. Gravity makes it stay on the ground because its force attraction between an object and the earth. 
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8 0
2 years ago
______ is an environmental group that works to create awareness of pollution
Cerrena [4.2K]

B) Greenpeace


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5 0
2 years ago
A 0.5 kg stone is raised from 1m to 2m height from the ground. what is the change in potential energy of the stone?
Usimov [2.4K]

Given: The mass of stone (m) = 0.5 kg

Raised from heights (h₁) = 1.0 m to (h₂) = 2.0 m

Acceleration due to gravity (g) = 9.8 m/s²

To find: The change in potential energy of the stone

Formula: The potential energy (P) = mgh

where, all alphabets are in their usual meanings.

Now, we shall calculate the change in potential energy of the stone

Δ P = P₂ - P₁ = mg (h₂ - h₁)

or,                = 0.5 kg ×9.8 m/s² ×(2.0 m - 1.0 m)

or,                = 4.9 J

Hence, the required change in the potential energy of the stone will be 4.9 J

4 0
3 years ago
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