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Tresset [83]
3 years ago
7

A student pulls a 50-newton sled with a force having a magnitude of 15 newtons. What is the magnitude of the force that the sled

exerts on the student?
Physics
1 answer:
Simora [160]3 years ago
5 0

Answer:

Force = 35 N

Explanation:

From Newton's third law of motion, the boy must apply a force greater than the weight of the sled to lift it.

weight of sled = mg

where m is its mass and g the force of gravity on it.

weight of sled = 50 N

Force applied by the boy on the sled = 15 N

Since the force applied on the sled by the boy is lesser than the weight of the sled, then;

Force that the sled exerts on the student = 50 - 15

                                             = 35 N

The force exerted by the sled on the student is 35 N.

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Why is it possible to see yourself in a object that reflects light, but not in one that scatters light
dedylja [7]
I think it is because in objects that reflect light, the light is bounces/reflects off the object in one direction and one angle, and hits your eye, causing it to be processed as a reflection of yourself in your brain. But in one that scatters light, it bounces/reflects off in many different directions. Due to this, your brain may not process it as a reflection.
Here is a little bit of extra info:
https://www.sciencelearn.org.nz/resources
7 0
3 years ago
The sun’s energy hits earth’s surface at the most direct angle at which locations?
3241004551 [841]

Answer:

at the Equator

Explanation:

The four seasons are determined by four main positions in the Earth's orbit in its turn around the Sun (ecliptic plane), which are called solstices and equinoxes: winter solstice (Capricorn point, December 22), spring equinox (Aries point, around March 21-22), summer solstice (Cancer point, June 21) and autumn equinox (Libra point, around September 22-23).

In the equinoxes, the axis of rotation of the Earth is perpendicular to the sun's rays, which fall vertically over the equator. In solstices, the axis is inclined 23.5º, so that the sun's rays fall vertically on the Tropic of Cancer (summer in the northern hemisphere) or Capricorn (summer in the southern hemisphere).

When falling vertically on Ecuador, it generates a greater impact on the surface of the Tierre reaching a greater amount of energy and therefore UV rays.

7 0
3 years ago
A block of aluminum with a weight of 10 N is placed in a beaker of water filled to the brim. Water overflows. The same is done i
grigory [225]

Answer:

   No

Explanation:

Given that

Weight of the aluminium block = 10 N

Weight of the aluminium lead = 10 N

We know that

Weight = Volume x Density x g

Wt= V x ρ x g

The density of aluminium ,ρ=2810 kg/m³

The density of lead ,ρ=11343 kg/m³

From above we can say that density of lead is more than the density of aluminium that is why the volume of the aluminium will be more than the volume of the lead for same weight.So aluminium will displace the water but lead will not displace the water.

So the answer is ,lead does not displace the water.

3 0
3 years ago
What can cause a big city to be warmer than the surrounding countryside?
hammer [34]
There are many people in the city and so much traffic that it pollutes the air and makes it warmer where the country dosent have much traffic so there for its cooler
4 0
3 years ago
Read 2 more answers
A feather is dropped onto the surface of the moon. How far will the feather have fallen if it reaches the surface in 9.00 second
Natali5045456 [20]

The feather's vertical position y is determined by

y=\dfrac12g_{\text{moon}}t^2

We take the feather's starting position to be the origin, and the downward direction to be positive. Then

y=\dfrac12\left(1.63\,\dfrac{\mathrm m}{\mathrm s^2}\right)\left(9.00\,\mathrm s\right)^2=66.0\,\mathrm m

so the answer is D.

3 0
3 years ago
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