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Temka [501]
3 years ago
14

When the temperature is cold, Tim's tires look under-inflated. This is because the air molecules in the tire ________ causing th

eir kinetic energy to _________ and volume to _______.
The answer is...

A) Slow down, decrease, contract

Because...
When the temperature is cold, Tim's tires look under-inflated. This is because the air molecules in the tire slow down causing their kinetic energy to decrease and volume to contract. slow down, decrease, contract
Physics
1 answer:
lys-0071 [83]3 years ago
3 0
True. The answers to the blanks are slow down, decrease, and contract (in the given order). Molecules move faster when warmer so, because it was cold the molecules in the air slowed down which lessened the kinetic energy and the overall volume of the tires to seem less nd more contracted.
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Expalin how waves energy and matter are related
emmasim [6.3K]
They are related because waves affect matter. Reflection, refraction, and diffraction. Reflection occurs when wave bounces back from a surface that they cannot pass through. Refraction occurs when waves bend as they enter a new medium at an angle and start traveling at a different speed.
8 0
3 years ago
A 300-kg truck moving rightward with a speed of 5 km/hr collides head on with a 1000kg car moving leftward with a speed of 100 k
igor_vitrenko [27]

Answer:

The final velocity of the vehicles will be -75km per hour (leftwards).

Explanation:

Let us call m_1, v_1 mass and velocity of the truck , m_2, v_2 mass and velocity of the car, and v_f the final velocity of the vehicles.

The law of conservation of momentum states that

m_1v_1-m_2v_2= v_f(m_1+m_2)

solving for v_f we get:

v_f = \dfrac{m_1v_1-m_2v_2}{m_1+m_2}

putting in numerical values

m_1 =300 kg \\v_1 =5km/hr = 1.39m/s\\m_2 = 1000kg\\v_2 = 100km/hr = 27.78m/s

v_f = \dfrac{300*(1.39)-1000*(27.78)}{300+1000}

\boxed{v_f = -21.0m/s } (<em>the negative sign indicates that the vehicles are moving in the leftward direction)</em>

or -75.8 km per hour.<em> </em>

7 0
3 years ago
What is the momentum of a 121.1-kg fullback running at a velocity of 3.091 m/s?
Anarel [89]

Using the formula p=mv for momentum your answer would come out to be: p=374.32 kgm/s

p=121.1*3.091

3 0
4 years ago
1. If we want to increase the strength of an electromagnet, which 2 of
kap26 [50]

Answer:

A) Have more coils of wire

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4 0
3 years ago
An object, initially at rest, is subject to an acceleration of 34 m/s^2. How long will it take for that object to reach 3400m ?
Norma-Jean [14]
Vf^2 = Vi^2 + 2ad
a= 34 m/s^2
Vi = 0 m/s
d = 3400m

Vf = 480.83 m/s

a=v/t
t=v/a
t=480.83/34
t=14.142 s
6 0
3 years ago
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