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I am Lyosha [343]

3 years ago

6

Objects A and B are separated by 2m and the force of attraction between them is 8 x 10^-10 N . If the mass of A is 8kg what is t

he mass of B ? Take G as 6.674 x 10 -11 Nm2/kg2

1 answer:

Jobisdone [24]3 years ago

5 0

Answer:

Only object a and b???????

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3 years ago

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A person hits a 45-g golf ball. The ball comes down on a tree root and bounces

Verizon [17]

Answer:

Maximum height, h = 10 m

Explanation:

It is given that,

Mass of golf ball, m = 45 g = 0.045 kg

The ball comes down on a tree root and bounces straight up with an initial speed of 14.0 m/s.

We need to find the height the ball will rise after the bounce. It is based on the conservation of energy such that,

$\dfrac{1}{2}mv^2=mgh$

h is maximum height raised by the ball

$h=\dfrac{v^2}{2g}\\\\h=\dfrac{(14)^2}{2\times 9.8}\\\\h=10\ m$

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3 years ago

What is the overall charge of 1.5 x 10^10 electrons?

Troyanec [42]

Answer: Charge = -2.4x10^-9 Coulombs

Explanation:

The charge of one electron is e = -1.6x10^-19 C

Then, the charge of 1.5 x 10^10 electrons is equal to 1.5 x 10^10 times the charge of one electron:

Here i will use the relation (a^b)*(a^c) = a^(b + c)

Charge = ( 1.5 x 10^10)*( -1.6x10^-19 C) = -2.4x10^(10 - 19) C

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7 0

3 years ago

1. If a 25 kg car accelerates at a speed of 100m/s2,2 what will the force of the car be?

algol13

Answer:

F = 2500N

Explanation:

F = ma

You're given m=25kg and a=100m/s²

Plug it in

F = (25)(100)

F = 2500N

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4 years ago

E. Describe in short the structure of a mercury barometer<br>

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Answer:

A mercury barometer has a glass tube that is closed at the top and open at the bottom.At the bottom of the tube is a pool of mercury.The mercury sits in a circular,shallow dish surrounding the tube.The mercury in the tube will adjust itself to match the atmospheric pressure above the dish.

hope this helps you

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3 years ago