3 years ago

What is the speed of a 0.145kg baseball if its kinetic energy is 109J?

Physics

1 answer:

pantera1 [17]3 years ago

6 0

Divide the two numbers and you will get your answer <span />

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What do these compounds have in common H2O cl2 NH3

nasty-shy [4]

Answer:

All the compounds are covalent compounds . This means that they are formed by the sharing of pair of electrons.

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3 years ago

You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. The ruler

scZoUnD [109]

Answer:

q=1.4*10^{-9}C

Explanation:

Given data:

charge on ruler = -14μC

Mass of tissue is 5 g

To Know the minimum charge, equate electrostatic force to weight

we have F = W

so $\frac{KQq}{r^2} =mg$

putting all value in equation,

$=\frac{9*10^9*(14*10^{-6})*q}{0.06^2} = 5* 10^{-3}*9.8$

solving for q

$q =\frac{5* 10^{-3}*9.8 *0.06^2}{9*10^9*(14*10^{-6})}$

or q=1.4*10^{-9}C

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3 years ago

Find the acceleration a body whose velocity increases from 11m/s to 33m/s in 10 seconds

solong [7]

Answer:

1.1 m/(s)^2

Explanation:

u=11 m/s

v=33 m/s

t=10s

v=u+at

=> 33=22+(a)(10)

=> 33-22=10a

=> 10a=11

=> a=11/10=1.1 m/(s)^2

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2 years ago

Energy created by the flow of electrons through a conductor.

kodGreya [7K]

The first one is electrical energy

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3 years ago

An object will not change its motion unless an outside force acts on it true or false

Gre4nikov [31]

Answer:

True!

Explanation:

Newton's First Law :)

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3 years ago

Read 2 more answers