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Nataly_w [17]
3 years ago
7

An unmarked police car traveling a constant 85 km/h is passed by a speeder. Precisely 2.00 s after the speeder passes, the polic

e officer steps on the acceleratorIf the police car accelerates uniformly at 2.00 m/s2 and overtakes the speeder after accelerating for 9.00 s , what was the speeder's speed?.
Physics
1 answer:
steposvetlana [31]3 years ago
6 0

Answer:

observe o gráfico abaixo que mostra o número de internação em um hospital no município no período de 1960

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When friction slows a sliding block___
Svetradugi [14.3K]

Answer:

A

Explanation:

When friction slows a sliding block, <u>the kinetic energy of the block is transformed into internal energy .</u>

<em>The frictional movement of two surfaces over one another leads to the conversion of some of their kinetic energies to another energy - heat or thermal energy. Hence, the temperatures of the objects are raised in the process. </em>

<u>Therefore, when a sliding block is slowed down due to friction, some of the kinetic energy of the block would be transformed into internal energy in the form of heat.</u>

The correct option is A.

6 0
2 years ago
A jetliner has a velocity of 95 m/s. What is the displacement of the jetliner at t=3.0 seconds?
charle [14.2K]
Distance = speed / time

speed = 95 m/s
time = 3 s

distance = 95 / 3 m

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5 0
3 years ago
Describe the way electromagnets
Leona [35]

Answer:

Assuming you mean how they work,

Explanation:

Electromagnets work by wrapping the wire around an iron core and attaching it to an electric charge.

3 0
3 years ago
What is the speed of light with N=1.33
alexgriva [62]

If the refractive index of some substance is  1.33, then
the speed of light in that substance is
                  
               (speed of light in vacuum) / (1.33)  = 

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3 0
3 years ago
Read 2 more answers
Which equation is used to calculate the electric potential in an electric field from a point charge?
scZoUnD [109]

Answer:

The electric potential (voltage) V produced by a point charge Q, at any point in space, is given by the following equation:

V=k\frac{Q}{r}

Where:

k=8.99(10)^{9} Nm^{2}/C^{2} is the Coulomb's constant

r is the distance  

The result is a scalar quantity, is defined as the electric potential energy per unit of charge and determines the electric influence exerted by the charge on that point of space.

6 0
3 years ago
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