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2 years ago

The melting point of pure water is _____. 32°C 100°C 0°C 212°C

Physics

2 answers:

JulsSmile [24]2 years ago

4 0

The melting point of pure water is _____.

32°C

100°C

0°C

212°C

The answer is 0

BabaBlast [244]2 years ago

3 0

Answer:

0°C and 32°F

Explanation:

ihavetotypemoresouhyeahig

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A car travels a distance of 400 m in 5 seconds. Calculate its average velocity.

ikadub [295]

Answer:

80 m/s

Explanation:

x = 400 m

t = 5 s

x = vt,

400 = v(5),

80 = v

5 0

2 years ago

Read 2 more answers

A mechanic changing the spark plugs in a car notes that the instruction manual calls for a torque with a magnitude of

Papessa [141]

The magnitude (in N) of the force she must exert on the wrench is 150.1 N.

<h3>Force exerted by the wrench</h3>

The force exerted by the wrench is calculated using torque formula as follows;

torque, τ = F x r x sinθ

where;

F is the applied force
r is the perpendicular distance if force applied

F = τ /(r sinθ)

F = (39) / (0.3 sin 60)

F = 150.1 N

Thus, the magnitude (in N) of the force she must exert on the wrench is 150.1 N.

Learn more about torque here: brainly.com/question/14839816

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1 year ago

determine the force of gravitational attraction between a 78kg boy sitting 2 meters away from a 65kg girl.

bixtya [17]

Answer:

$F=8.45\times 10^{-8}\ N$

Explanation:

Given that,

Mass of a boy is 78 kg

Mass of a girl is 65 kg

We need to find the force of gravitational attraction between them if they are 2 m away.

The formula for the gravitational force is given by :

$F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 78\times 65}{(2)^2}\\\\=8.45\times 10^{-8}\ N$

So, the force between them is $8.45\times 10^{-8}\ N$ .

8 0

2 years ago

Which of the following correctly describes the hierarchy that exists in the universe? (3 points)

r-ruslan [8.4K]

Answer:

Explanation:

A solar system is a collection of planets, their moons, and other objects in orbit around a central star.

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3 years ago

What force is needed to move a barrel 45-m if 3600 J of work are accomplished?

lesantik [10]

Answer:

<h3>The answer is 80 N</h3>

Explanation:

The force acting on the object can be found by using the formula

$f = \frac{w}{d} \\$

where

d is the distance

w is the work done

We have

$f = \frac{3600}{45} \\$

We have the final answer as

Hope this helps you

8 0

3 years ago