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emmainna [20.7K]
3 years ago
9

3.A bridge usually has expansion joints. They allow the bridge to become slightly longer when it

Physics
1 answer:
Dominik [7]3 years ago
5 0

Answer:

a) When the sides of the joint are close together, the particles have more kinetic energy than they do when sides are farther apart.

Explanation:

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Cold air holds less water than warm air.<br> True<br> False
Vsevolod [243]

Answer:

The answer is for your question is :

Explanation:

True

4 0
3 years ago
. A 65 kg climber on top of Mt. Everest (8800 m high). How much Pontential Energy does he have?
Kruka [31]

Answer:

He has 5,609,404 J of potential energy

Explanation:

P.E. = M*G*H

65 * 9.8^2 * 8800

7 0
3 years ago
Curious George is whirling a 2.0 kg bunch of bananas on a smooth floor in a circular path having a radius of 0.50 m. What force
Sedaia [141]

Answer:

The force will be F_{c}=2.47 N

Explanation:

Let's use the centripetal force equation.

F_{c}=m\omega ^{2}R

Where:

m is the mass of the bunch of bananas

ω is the angular speed

R is the radius

Now, 1 rev every 4 seconds or 0.25 rev/sec is the angular speed, but we need to write this speed in rad per second.

\omega =0.25\frac{rev}{s}=0.25*2\pi \frac{rad}{s}=1.57 \frac{rad}{s}

FInally, the force will be:

F_{c}=2.0*1.57^{2}*0.5

F_{c}=2.0*1.57^{2}*0.5

F_{c}=2.47 N

I hope it helps you!

4 0
3 years ago
A small plastic sphere of mass 2.0 g is charged to −5.0 nC and held 2.5 cm above a small glass bead of mass 0.015 g resting on a
LenKa [72]

Answer:uhhh

Explanation:

Uhhhh

5 0
4 years ago
What obstacles will you need to deal with to build railroad routes
polet [3.4K]

<u>Answer:</u>

<em>Construction of a railroad route is a strenuous task and one has to face several obstacles. </em>

<u>Explanation:</u>

Setting up the best possible plan for laying a rail route is a time-taking task. Several factors like economical nature of the plan, proper availability of building materials, minimum river crossings etc should be considered.

To build a railroad route the government has to get hold of the land through which the railroad route is planned. This is never an easy task. The people of the area have to be given adequate compensation and should be properly evacuated. The chances of people disapproving the plan are more.

4 0
3 years ago
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