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Lera25 [3.4K]
3 years ago
12

What is the mass of an object with a velocity of 24.1 m/s and a momentum of 28.3 kg m/s?​

Physics
2 answers:
almond37 [142]3 years ago
7 0

Answer:

\boxed {\tt 1.17427386 \ kilograms}

Explanation:

The formula for momentum is:

p=mv

From this formula, we know that mass can be found by dividing the momentum by the velocity.

\frac{p}{v}=m

The momentum is 28.3 kg m/s and the velocity is 24.1 m/s

p=28.3 \ kg \ m/s \\v=24.1 \ m/s

\frac{28.3 \ kg \ m/s }{24.1 \ m/s} =m

Divide. The meters per second or "m/s" will cancel each other out.

\frac{28.3 \ kg}{24.1} =m

1.17427386 \ kg=m

The mass of the object is 1.17427386 kilograms.

ahrayia [7]3 years ago
6 0

Answer:

1.17427...kg

Explanation:

Assumptions: no friction, no air resistance, no internal resistance, and it is 1 dimensional travel for velocity.

p=mv, where p is momentum, m is mass, and v is velocity

28.3=24.1(m)

divide both sides by 24.1

you get 1.174273859

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Usimov [2.4K]
Since the bulb consumes 100 watts of power and its efficiency is 95%,
it generates 95 watts of light energy and 5 watts of heat energy whenever
it's turned on.

5 watts means  5 joules of energy per second.

(2.5 hours) x (3,600 seconds/hour) =  9,000 seconds

(9,000 seconds) x (5 joules/second)  =  45,000 joules of heat in 2.5 hours

7 0
3 years ago
Please help me do that.​
Anika [276]

Answer:

a) 22.2 N

Explanation:

To find load effort. Identify load, efficiency and velocity ratio (VR)

Here given:

  • Load = 100 N
  • Efficiency = 75%
  • VR (number of pulleys) = 6

Effort :

\rightarrow \sf \dfrac{MA}{VR} = \dfrac{Load \  \div \ efficiency }{VR} = \dfrac{100 \div 75 \% }{6} = 22.22 \ N

3 0
2 years ago
Suppose that you and three classmates are discussing the design of a roller coaster. One says that each hill must be lower than
8_murik_8 [283]

Answer:

I would say that I agree with the one that said that each hill must be lower than the previous one and use the principle of conservation of energy to explain.

Explanation:

Roller coaster are usually designed such that its total energy remains conserved at any point on the track. Now,  the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. At certain height on the track, the total energy of the roller coaster is in form of potential energy, which gets converted to kinetic energy as soon as it starts sliding down the hill till get to the hill's endpoint where it has maximum kinetic energy. The cycle of sliding from a high point on the track to a low point on the track means there is potential energy is converted to kinetic energy and kinetic energy then converts back to potential energy and the cycle continues.

However, due to the effect of gravity and frictional force between the track and the coaster, the energy of the coaster is gradually reduces, so it becomes a bit difficult for the coaster to move to the next hill of the same height. It is for this reason that each hill must be lower than the previous one, so that the coaster can overcome the next hill's height with its reduced energy until it loses all its energy and comes to a stop.

4 0
3 years ago
The atomic number is always equal to the total number of which is also equal to the total number of
denis23 [38]

Answer:

Protons; electrons.

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.

Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons. All the physical properties of a mineral result from the mineral's internal arrangement of atoms.

The atomic number is always equal to the total number of protons, which is also equal to the total number of electrons. Protons are the positively charged particles that make up an atom while electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.

A chemical element is denoted by X_{Z}^{A}

Where;

X is the symbol of the element.

A is the atomic mass or number of nucleons.

Z is the atomic number or number of protons.

Therefore, the number of neutrons = A - Z

8 0
3 years ago
When falling through the air, which of the following objects will hit the ground first?
ipn [44]
I think the answer is a penny

5 0
3 years ago
Read 2 more answers
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