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3 years ago

10

assume that in an unpolished floor a lady us pushing a 40 kg box to the left with an applied force of 192 N. find the sum of for

ce

1 answer:

Vesnalui [34]3 years ago

5 0

The sum of force is 7,680...............

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How effectiveness of a small force is increased when action area of force is<br> reduced?

STatiana [176]

Answer:

The force is proportional to the area, for if we increase the area but keep the number of molecules per cubic centimeter the same, we increase the number of collisions with the piston in the same proportion as the area was increased.

Explanation:

more area =more space = more free for molecules = less pressure = less force.

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3 years ago

uranus is much smaller and less massive than jupiter. uranus rotates on its side, giving it extreme seasons. this may have been

Tresset [83]

The correct statements from the following list about how Uranus is different from Jupiter, and how its rings and moons formed and evolved includes the following:

Uranus is much smaller and less massive than Jupiter.
Uranus's appearance is nearly featureless; very bland.
Uranus has some large moons and rings.
Uranus rotates on its side, giving it extreme seasons. This may have been caused by an impact.

Describe Uranus?

Uranus is described as the seventh planet from the Sun. The name Uranus is a reference to the Greek god of the sky, Uranus, who, according to Greek mythology, was the great-grandfather of Ares, grandfather of Zeus and father of Cronus.

Some known facts about Uranus includes the following:

Uranus is the coldest planet in the Solar System
Uranus orbits the Sun on its side
A Season on Uranus lasts one long day which is equal to 42 years
Uranus is the second-least dense planet.

Learn more about Uranus at: brainly.com/question/13770002

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1 year ago

On hot sunny days or days with thin clouds, the temperature over the land is warmer than the temperature over the water. The war

Luden [163]

Answer:

i think it would be a but i am not 100% sure on that

4 0

3 years ago

Through which medium would sound travel the fastest, water, a steel bar, or nitrogen gas explain

777dan777 [17]

It would travel faster through a steel bar, because sound waves travel by vibrating molecules in a medium. In solids, these molecules are spaced closer together, causing sound to travel faster through it. so that means the second fastest medium is liquid and the slowest is gas

3 0

3 years ago

Please Help! Question 2 Unsaved

Ilia_Sergeevich [38]

2. a cruise ship docked in a port

In fact, inertia is the resistance of an object to any change in its velocity/change of its state of motion. The inertia of an object depends only on the mass of the object: the greater the mass, the larger the inertia. In this case, the object with largest mass among the choices is the cruise ship docked in the port, so this is the object with most inertia.

3. gram

Mass represents the quantity of matter inside an object, and it is measured in grams (g). Actually, the SI units of the mass is the kilogram (kg), a multiple of the gram: 1 kg = 1000 g.

4. $m/s^2$

Acceleration is defined as the rate of change of velocity per unit time:

$a=\frac{\Delta v}{\Delta t}$

The change in velocity, $\Delta v$ , is measured in m/s, while the time $\Delta t$ is measured in seconds (s): therefore, the acceleration is measured in

$[a]=\frac{[m/s]}{[s]}=[\frac{m}{s^2}]$

5. Newtons

The Newton (N) is the SI unit used for the force. The force is defined as the product between mass (m) and acceleration (a):

$F=ma$

since the mass is measured in kg and the acceleration in m/s^2, 1 Newton corresponds to

$1 N= 1 kg \frac{m}{s^2}$

6. 1030 N

Given m=1.04 kg (mass of the hockey puck) and $a=987 m/s^2$ (acceleration of the hockey puck), the force needed to accelerate the puck with this acceleration is given by Newton's second law:

$F=ma=(1.04 kg)(987 m/s^2)=1026 N$

which corresponds (approximately) to option C) 1030 N.

7. 520 kg

Given $a=9.71 m/s^2$ (acceleration of the car) and F=5050 N (net force applied on the car), we can find the mass of the car by using again Newton's second law:

$m=\frac{F}{a}=\frac{5050 N}{9.71 m/s^2}=520 kg$

8. 1.00 m/s2

In this case, the net force applied by Amber is F=35 N.

The total mass of the brother+wagon is

$m=32 kg+3 kg=35 kg$

Therefore, we can find the acceleration of the system by using again Newton's second law:

$a=\frac{F}{m}=\frac{35 N}{35 kg}=1.00 m/s^2$

9. forward

This is because of the inertia: in fact, the car (and the groceries inside it) is initially moving forward. When it stops, the groceries inside the car tends to continue moving forward: due to their inertia, they tends to continue their motion with constant speed, until they are stopped by an external force.

10. The tendency of an object with mass to resist a change in its motion.

Inertia is exactly this: the tendency of an object with mass to resist a change in its motion. This means that an object at rest tends to stay at rest, while an object in motion tends to keep its speed. The inertia of an object depends only on its mass: the larger the mass, the greater the inertia.

6 0

3 years ago