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kherson [118]
3 years ago
6

An automobile with passengers has weight 19.4 kN and is moving at 108 km/h when the driver brakes to a stop. The frictional forc

e on the wheels from the road has a magnitude of 8040 N. Find the stopping distance.
Physics
1 answer:
mixer [17]3 years ago
4 0

Answer:

12.0

Explanation:

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Which of these is a chemical control used to help control invasive species?
astraxan [27]

Answer:

a

Explanation:

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4 0
3 years ago
An athlete whirls a 7.00 kg hammer 1.8 m from the axis of rotation in a horizontal circle, as
iogann1982 [59]

Answer:

A-500 N

Explanation:

The computation of the tension in the chain is shown below

As we know that

F = ma

where

F denotes force

m denotes mass = 7

And, a denotes acceleration

Now for the acceleration we have to do the following calculations

The speed (v) of the hammer is

v = Angular speed × radius

where,

Angular seed = 2 × π ÷ Time Period

So, v = 2 × π × r ÷ P

v = 2 × 3.14 × 1.8 ÷ 1

= 11.304 m/s

Now

a = v^2 ÷ r

= 70.98912 m/s^2

Now the tension is  

T = F = m × a

= 7 × 70.98912

= 496.92384 N

= 500 N

5 0
3 years ago
The best way to study young stars hidden behind interstellar dust clouds would be to use
Ainat [17]

Answer: Infrared light

Explanation:

Infrared light is an electromagnetic radiation which has longer wavelength than visible light.

cool and faint objects are difficult to be detected using visible light.

Infrared light can pass through dust and clouds of gases. Thus, it is the best way to study the young stars hidden behind interstellar dust clouds.

8 0
3 years ago
Write an equation that expresses the first law of thermodynamics in terms of heat and work.
OleMash [197]

Answer:

Heat Input = Work Output       (at 100% efficiency)

ΔQ = ΔW

(you cannot get something for nothing)

3 0
2 years ago
What is needed for a complete circuit? a Charge flows along a complete conducting path b High Resistance c Wires connected to a
Ilia_Sergeevich [38]

Answer:

a Charge flows along a complete conducting path

Explanation:

6 0
2 years ago
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