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3 years ago

If a car and a bowling ball were thrown off a 100 foot cliff at the same time, which would hit the ground first?

Physics

1 answer:

nirvana33 [79]3 years ago

8 0

They would hit the ground at the same time. No matter the weight laws of physics.

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A proton initially at rest is accelerated by a uniform electric field. The proton moves 4.76 cm in 1.10 x 10^-6 s. Find the volt

iVinArrow [24]

Answer:

The voltage drop through which the proton moves is 39.1 V.

Explanation:

Given that,

Distance = 4.76 cm

Time $t=1.10\times10^{-6}\ s$

We need to calculate the acceleration

Using equation of motion

$s = ut+\dfrac{1}{2}at^2$

Where, s = distance

a = acceleration

t = time

Put the value in the equation

$4.76\times10^{-2}=\dfrac{1}{2}\times a \times(1.10\times10^{-6})^2$

$a=\dfrac{2\times 4.76\times10^{-2}}{(1.10\times10^{-6})^2}$

$a=7.87\times10^{10}\ m/s^2$

We need to calculate the voltage drop

Using formula of electric field

$F=qE$

$F = q\dfrac{V}{d}$ ....(I)

Using newton's second law

$F = ma$ ....(II)

Put the value of F in equation (I) from equation (II)

$ma=\dfrac{qV}{d}$

$V=\dfrac{mad}{q}$

Where, q = charge

a = acceleration

d = distance

m= mass of proton

Put the value into the formula

$V=\dfrac{1.67\times10^{-27}\times7.87\times10^{10}\times4.76\times10^{-2}}{1.6\times10^{-19}}$

$V=39.1\ V$

Hence, The voltage drop through which the proton moves is 39.1 V.

8 0

3 years ago

Which statement best describes an atom?

ycow [4]

A group of protons and neutrons that are surrounded by electrons

7 0

3 years ago

If you walk North for 40 feet and then walk East for 30 feet, what is your total distance

yarga [219]

Answer:

The person travelled a total distance of (40+30) feet = 70 feet

Displacement= 50feet (im not positive on the displancement)

displacemeny is the shortest distance between two pionts

Explanation:

5 0

4 years ago

What is at the center of a black hole

mafiozo [28]

The center of the ghole is the singularity. or a point where extremely large amounts of matter are crushed into an infinitely small amount of space. hope it helps :)

6 0

3 years ago

A ball rolls to the right across a grassy field slowing down as it does so. Which of the following must be true?

In-s [12.5K]

Answer: i could prolly answer if it made more sense. which of the following where?

5 0

3 years ago

Read 2 more answers