PHYSICS HIGH SCHOOL

What is meant by fundamental unit? write any two difference between mass and weight.​

Answers

Answer 1
Answer:

Answer:

Fundamental unit is any unit that is not dependent on other units and other units can be derived from them

Explanation:

Units such as Kilogram, Mass and Time are said to be fundamental units because they are independent.

Differences between Mass and weight;

1. Mass is the measure of the amount of matter in a body while weight is a measure of how the force of gravity acts upon that mass.

2. Mass is a scalar quantity while weight is a vector quantity

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The ratio of output power yo input power, in percent, is called

Answers

The ratio of output power to input power for a machine is called the machine's efficiency. It doesn't have to be expressed in percent.

If an object looses electrons, then have been transferred

Answers

if a neutral object loses some electrons, then it will possess more protons

Determine the acceleration of the moon, which completes a nearly circular orbit of 384.4 mm radius in 27.3 days.

Answers

Answer: 2.72\cdot 10^{-3} m/s^2

Explanation:

I took the quiz

What is the most current NASA mission on Mars?

Answers

The most recent NASA mission on Mars is Mars Science Laboratory. Its key component was Curiosity rover.
Rover has celebrated his first landing anniversary yesterday (Martian year, that is 687 Earth days).
Curiosity managed to find traces of water on Mars, so it's possible that there used to be some life on Mars.
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A horse has a kinetic energy of 29,400 j if the horse has a mass of 300 kg what is the horses speed?

Answers

If a horse has a kinetic energy of 29,400 Joules if the horse has a mass of 300 kilograms, then the speed of the horse would be 14 m / s.

What is mechanical energy?

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.

The expression for total mechanical energy is as follows

ME = PE + KE

As given in the problem a horse has a kinetic energy of 29,400 j if the horse has a mass of 300 kg,

The kinetic energy of the horse = 0.5 × 300 × v²

                                         29400 = 150 × v²

                                                  v = 14 m / s

Thus , If a horse has a kinetic energy of 29,400 Joules if the horse has a mass of 300 kilograms, then the speed of the horse would be 14 m / s.

To learn more about mechanical energy here, refer to the link given below ;

brainly.com/question/12319302

#SPJ2

kinetic energy = 29.400 j
m= 300 kg

kinetic energy = ½• m• v²
kinetic energy = ½•300•v²
29400= 150•v²
29400 : 150 = V²
196 = V²

√196 = V

14 = V

Protons are made up of ___ up quark(s) and ___ down quark(s).a. 1, 1
b. 1, 2
c. 2, 1
d. 2, 2

Answers

The correct answer is C. 2, 1

Explanation:

In physics, protons along with neutrons and electrons are the particles that compose atoms which are the basic unit of matter. Protons different neutron have a positive charge and along with neutrons create the nucleus of the atoms. In terms of composition, protons are made up of three quarks (elementary particles) that are divided into two up quarks and one down quark that are two types of quarks with low mass. According to this, it can be concluded protons are made up fo 2 up quarks and 1 down quark.
Choice c it's confusing to understand but it's c
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