3 years ago

A 10 kg bowling ball sits at the top of a 10 m hill and then slides down its icy hillside.

Physics

2 answers:

Nataly_w [17]3 years ago

5 0

We need more informtion

andriy [413]3 years ago

4 0

So is there an answer choice if not the answer would be 100m

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A solid, horizontal cylinder of mass 18.0 kg and radius 1.70.0 m rotates with an angular speed of 40 rad/s about a fixed vertica

Radda [10]

Answer:39.88 rad/s

Explanation:

Given

mass of cylinder m_1=18 kg

radius R=1.7 m

angular speed $\omega =40rad/s$

mass of $m_2=0.8 kg$ dropped at r=0.3 m from center

let $\omega _2$ be the final angular velocity of cylinder

Conserving Angular momentum

$L_1=L_2$

$\left ( \frac{m_1R^2}{2}\right )\omega =\left ( \frac{m_1R^2}{2}+m_2r^2\right )\omega _2$

$\left ( \frac{18\cdot 1.7^2}{2}\right )\cdot 40=\left ( \frac{18\cdot 1.7^2}{2}+0.8\cdot 0.3^2\right )\omega _2$

$26.01\times 40=26.082\times \omega _2$

$\omega _2=39.88 rad/s$

3 0

3 years ago

An 8 Ω resistor is connected to a 6 V battery and another resistor in series. If the current in the circuit is 0.5 A, what is th

Semmy [17]

8+R=V/I
8+R=6/0.5=12 ohm
then R=4 ohm

4 0

3 years ago

The diagram shows an example of convection.

const2013 [10]

Answer: Option (C) is the correct answer.

Explanation:

When we heat a fluid then the movement within the fluid makes hot (less dense) material to rise and cooler (more denser) material to sink at the bottom. This process is known as convection.

Thus, in the diagram hot (less dense) water will rise and cooler (more dense) water sinks at the bottom.

Therefore, we can conclude that according to the arrow the label belongs to cooler water sinks.

5 0

3 years ago

Read 2 more answers

natta225 [31]

Answer:

maybe it is the first one

7 0

3 years ago

Skater A travels with velocity of 3.2 m/s and has a momentum of 200 kg m/s

Ivenika [448]

Here's link $^{}$ to the answer:

bit. $^{}$ ly/3gVQKw3

5 0

2 years ago