3 years ago

What is mass divided by volume

Physics

1 answer:

Ksju [112]3 years ago

8 0

Answer:

mass/volume is the density of an object

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Mechanical waves require a medium to travel, but electromagnetic waves do not.

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3 years ago

Suppose a pendulum bob is swinging back and forth. If the highest point is 12.5 cm above the lowest point, what would be speed o

Colt1911 [192]

Answer:

The speed of the bob when it passes the lowest point $V = 1.57 \frac{m}{s}$

Explanation:

Given data

$H = 12.5 \ cm = 0.125 \ m\\$

When a pendulum swinging back & forth then at highest point the velocity is zero and lowest point velocity is maximum.

Velocity at lowest point is given by

$V = \sqrt{2 g H}$

$V = \sqrt{2 (9.81)(0.125)}$

$V = 1.57 \frac{m}{s}$

Therefore the speed of the bob when it passes the lowest point $V = 1.57 \frac{m}{s}$

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3 years ago

Imagine that two charged objects are the system of interest. When the objects are infinitely far from each other, the electric p

podryga [215]

Answer: Option (c) is the correct answer.

Explanation:

It is known that the expression for potential energy related to charges and distance between their separation is as follows.

$U_{q} = \frac{kq_{1}q_{2}}{r}$

where, $q_{1}$ and $q_{2}$ are two charges

r = distance of separation between the charges

k = electrostatic constant

So, when both the charges are carry the same charge and r is small then the value of potential energy will be positive in nature.

Whereas if the distance of separation between the charges is infinitely large then the potential energy calculated will be zero everywhere.

Thus, we can conclude that the statement one object is negatively charged and the other one is positively charged, is incorrect.

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What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?

bija089 [108]

Your answer would be

B. 7.3 KG

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3 years ago