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Arisa [49]
3 years ago
6

A car moves with an initial velocity of

Physics
1 answer:
garik1379 [7]3 years ago
6 0

Answer:

Explanation:

v = u + at

a) v = 18 + 1.5(7.0)

   v = 28.5 m/s

b) v = 18 - 1.5(7.0)

   v = 7.5 m/s

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An electric lightbulb in a lamp fixture is illuminating a small room. The system consists of the lightbulb, the lamp fixture, th
mixas84 [53]

The role of thermal energy is to balance the electrical energy lost from the light bulb.

<h3>Energy conservation</h3>

The law of energy conservation states that energy can neither be created nor destroyed but can be transformed from one form to another.

<h3>Thermal energy</h3>

This is a form of energy that occurs due to rise in temperature.

The role of thermal energy is to balance the electrical energy lost from the light bulb.

Learn more about conservation of energy here: brainly.com/question/166559

6 0
2 years ago
Gravitational force on the moon is only 1/6 that of the gravitational force on earth. what would be the weight of a 10-kg object
MA_775_DIABLO [31]
According to Newton's Second Law of Motion, the force is equal to the mass of an object multiplied by its acceleration. When you talk about gravitational force, the acceleration referred to here is the acceleration due to gravity. This is very familiar to us in physics. The acceleration due to gravity on Earth is equal to 9.81 m/s². It actually depends on the location. According to the Universal Law of Gravitation:

F = Gm₁m₂/d²

The force is a factor of the product of two masses and their distance from each other. The G is a constant called the universal gravitational constants. So, gravitational force is actually a relative force exerted by one body to another. 

Going back the Second Law of Motion, we can modify the equation to:

F = mg

Since it is mentioned that the gravity on the moon is only 1/6 of the Earth, then the gravity for moon is:
g,moon = 1/6(9.81) = 1.635 m/s²
So, let's compare the weight of the object with a mass of 10 kg. The weight is actually the force due to gravity pulling you towards the center of the body.

Weight on Earth = (10 kg)(9.81 m/s²) = 98.1 N
Weight on Moon = (10 kg)(1.635 m/s²) = 16.35 N

The mass, on the other hand, is not affected by gravity. It is always constant. Therefore, the mass of the object on the moon is the same with its mass on the Earth.
6 0
4 years ago
Find the magnitude of the force that our planet's magnetic field exerts on this wire if it is oriented so that the current in it
laila [671]

Answer: F = 2.1 x 10^-4N

Explanation: Question is incomplete.

The complete question is; A straight, 2.5-m wire carries a typical household current of 1.5 A (in one direction) at a location where the earth’s magnetic field is 0.55 gauss from south to north. Find the magnitude and direction of the force that our planet’s magnetic field exerts on this wire if it is oriented so that the current in it is running (a) from west to east.

Given parameters; l = 2.5m, I = 1.5A, B = 0.55 guass = 0.55 x 10^-4 Tesla , theta = 90 (from West to East), F = ?

F = BILsin(theta)

F = 0.55 x 10^-4 x 1.5 x 2.5 x sin 90

F = 2.1 x 10^-4 N.

According to right hand rule, it's direction is upward.

6 0
3 years ago
Which is the function of a nucleus within a eukaryotic cell?
DerKrebs [107]
ANSWER
D) store genetic information that provides instructions for the cell
6 0
3 years ago
Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.
Nikolay [14]
I think answer should be d. Please give me brainlest let me know if it’s correct
5 0
3 years ago
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