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3 years ago

Mass is:

Physics

1 answer:

motikmotik3 years ago

4 0

Answer:

C-How much matter is in an object

Explanation:

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Science: Which statement is true about star A

Elza [17]

Answer:

no clue

Explanation:

6 0

3 years ago

A sled of mass m is coasting on the icy surface of a frozen river. While it is passing under a bridge, a package of equal mass m

sweet [91]

Answer:B

Explanation:

Given

mass of Sled is m

another package of mass m is thrown on it

Suppose u be the initial velocity of sled

conserving momentum

$mu=2mv$

$v=\frac{u}{2}$

where v is the final velocity

Initial kinetic energy $=\frac{1}{2}mu^2$

Final Kinetic Energy $=\frac{1}{2}(2m)\cdot (\frac{u}{2})^2$

Final Kinetic Energy $=\frac{1}{2}\times \frac{1}{2}mu^2$

Final kinetic Energy is half of initial

5 0

3 years ago

The diagram shows the top view of a 65-kg student at point A on an amusement park ride. The ride spins the student in a horizont

Elza [17]

Answer:

1923 N

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 65 Kg

Radius (r) = 2.5 m

Velocity (v) = 8.6 m/s

Centripetal force (F) =?

The centripetal force, F, can be obtained by using the following formula:

F = mv²/r

F = 65 × 8.6² / 2.5

F = 65 × 73.96 / 2.5

F = 4807.4 / 2.5

F = 1922.96 ≈ 1923 N

Thus, the magnitude of the centripetal's force acting on the student is approximately 1923 N

3 0

3 years ago

A light-year is a measurement of _____.<br> a. time<br> b. gravity<br> c. energy<br> d. distance

Evgen [1.6K]

D. distance

A light-year is the distance light would travel in 1 year.

6 0

3 years ago

Read 2 more answers

A 300-W blender did 10,500J of work. how long was the blender running?

forsale [732]

Answer:

The blender was running for 35 seconds.

Explanation:

Given:

Power of the blender is, $P=300\ W$

Work done by the blender is, $W=10500\ J$

We know that, power is defined as the rate at which work is done by the body.

Here, we are given the power and work done and we are asked to find time taken.

Let the time of running of the blender be 't' seconds.

So, the power of the blender is given as:

$P=\frac{W}{t}$

Rewriting the above in terms of 't', we have

$t=\frac{W}{P}$

Plug in the given values and solve for 't'. This gives,

$t=\frac{10500}{300}\\t=35\ s$

Therefore, the blender was running for 35 seconds.

6 0

4 years ago