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aniked [119]
3 years ago
11

1.imagine you were able to throw a ball in a frictionless environment such as outer space.once you let go of the ball,what will

happen to the ball according to the law of inertia?
a.it will travel in a straight forever line
b.it will travel striaight line but eventually slow down
c.it will continue to speed up forever
d.it will slow down and turn
2.a car accelerates down the road .what is the reaction to the tires pushing on the road?
a.the car in the tires moving the car
b.the masses of the car pushing on the tires
c.the road pushing on the tires
d.the road moving away from the tires
Physics
1 answer:
Scorpion4ik [409]3 years ago
5 0
Imagine you were able to throw a ball in a frictionless environment
such as outer space.  Once you let go of the ball, it will travel forever
in a straight line, and at a constant speed.  (At least until it bumps into
something.)

A car accelerates down the road.  The reaction to the tires pushing
on the road is the road pushing on the tires.

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Calculate the kinetic energy of a 2.2kg brick when it has a speed of 4.9m/s
Alborosie

Answer:

Kinetic energy of the brick is 26.4 Joule

3 0
3 years ago
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Determine the final temperature of a gold nugget (mass = 376 g) that starts at 398 K and loses 4.85 kJ of heat to a snowbank whe
m_a_m_a [10]

Answer: Final temperature of a gold nugget will be 297 K

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

q=m\times c\times (T_{final}-T_{initial})

q = heat released  = -4.85 kJ = -4850 J

m = mass of metal =  376 g

T_{final} = final temperature of metal = ?

T_{initial} = initial temperature of metal = 398 K

c = specific heat of metal =

-4850=376\times 0.128\times (T_{final}-398)

 (T_{final}-398)=-101

 (T_{final}=297K

Thus the final temperature of a gold nugget will be 297 K

6 0
3 years ago
A tennis player player receives a shot with the ball (.06kg) travelling horizontally at 50.0 m/s and returns the shot with the b
ahrayia [7]
Let: 

<span>m- 0.0600Kg </span>
<span>v1- +50.0 m/s </span>
<span>v2- -42 m/s </span>

<span>a) </span>

<span>momentum1 - momentum2 = impulse </span>
<span>p1 - p2 = Ft </span>
<span>m(v1 + v2) = Ft </span>
<span>Ft = 0.54 N-s </span>

<span>b) </span>

<span>Work is traditionally force times distance but an easy way to get through this one is to think logically and keep your units straight: </span>

<span>The racket creates an overall velocity of 90 m/s for the ball: </span>

<span>W=(Ft)*(V) </span>
<span>W=0.54 N-s * 90 m/s </span>
<span>W=48.6 N-m = 48.6 J</span>
3 0
3 years ago
you are the person in charge of building a nuclear power plant in florida. your first choice is to select a
sammy [17]

Answer: you are the person in charge of building a nuclear power plant in Florida. your first choice is to select a site for building the power plant.

Explanation: To find the answer, we need to know more about the nuclear power plants and the criteria to select the site for power plant.

<h3>What you mean by nuclear power plants?</h3>
  • Nuclear power can be defined from the nuclear fission reaction.
  • These power plants will heat the water to produce steam and this steam is used to spin large turbines and thus generates electricity.
<h3>How to select the site for nuclear power plant?</h3>
  • We have to consider the following things,
  • keep distance from populated area.
  • distance from load center.
  • Accessibility to site.
  • Water availability and fuel availability.
  • waste disposal.

Thus, we can conclude that, before building a nuclear power plant, our first choice should be to select a site.

Learn more about the nuclear power plants and the criteria to select the site for power plant here:

brainly.com/question/28045272

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8 0
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the velocity (v) of a tranvas wave in a string is related to tension (T) the mass (M) and the length (L) of de string by the rel
Lana71 [14]

1

Explanation:

1

22u238uy832y978328993

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