2 years ago

A ball was positioned in the middle of a smooth ramp and allowed to roll

Physics

1 answer:

netineya [11]2 years ago

6 0

Answer:

it is quicker

Explanation:

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A= v50cm-v20cm __________________ t

andrezito [222]

Answer:

.....?

Explanation:

did i help? NO ok.

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3 years ago

A train travels 1000 m south for 100 s. What is the

Alexandra [31]

C. 10 m/s
You divide 1000 m by 100 s.
1000/100 to find the velocity

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3 years ago

What type of simple machine is found in a wheelbarrow? Lever Wedge

Semenov [28]

Answer: Lever

A wheelbarrow consists of a lever to be able to lift the material, and a wheel to be able to move it horizontally. So in a sense, a wheelbarrow is a complex machine consisting of two simple machines.

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3 years ago

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If the pressing force on the slidding surfaces is greater then friction will be

Tema [17]

Answer:

Kinetic friction is lesser than limiting friction. Two surfaces are rubbed together, first with a smaller force and then with a greater force.

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3 years ago

At a distance D from a very long (essentially infinite) uniform line of charge, the electric field strength is 1000 N/C. At what

Alla [95]

Answer:

The correct option is (a).

Explanation:

We know that, the E is inversely proportional to the distance as follows :

$E=\dfrac{k}{d^2}$

We can write it as follows :

$\dfrac{E_1}{E_2}=(\dfrac{d_2}{d_1})^2$

Put all the values,

$\dfrac{1000}{2000}=(\dfrac{d_2}{d})^2\\\\\sqrt{\dfrac{1000}{2000}}=(\dfrac{d_2}{D})\\\\0.7071=\dfrac{d_2}{d}\\\\d_1=0.7071D\\\\d_1=\dfrac{D}{\sqrt2}$

So, the correct option is (a).

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2 years ago