PHYSICS HIGH SCHOOL

2.Which of the following gear speeds
makes motor vehicle move faster?
a) 0
b) 11
c) 2
d) 3
e) 4​

Answers

Answer 1
Answer:

Answer:

e.4

Explanation:
Answer 2
Answer: e - 4
explanation - because it is

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A temperature of 200°F is equivalent to approximately A. 232°C.
B. 93.3°C.
C. 840°C.
D. 37.8°C.

Answers

C = 5/9 x (°F - 32)

C = 5/9 (200 - 32)

C = 5/9 x 168

C = 37.74 C or to round off 37.8 C

Hope this helps

PLEASE HELP !!In order to describe the velocity of an object, which three pieces of data are needed?

Answers

Distance from the reference point

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true?The mechanical waves reach Earth, while the electromagnetic waves do not.

The electromagnetic waves reach Earth, while the mechanical waves do not.

Both the mechanical waves and the electromagnetic waves reach Earth.

Neither the mechanical waves nor the electromagnetic waves reach Earth.

Answers

Among the choices, the correct statement is: "The electromagnetic waves reach Earth, while the mechanical waves do not."

The sun's electromagnetic waves reach the Earth in the form of radiation. Mechanical waves cannot travel through vacuum. These two facts alone support the correct statement.

Answer:

The electromagnetic waves reach Earth, while the mechanical waves do not.

Explanation:

Sun's radiation that reaches the Earth belongs to  the Infra red, Visible and the Ultraviolet  range of frequencies of the electromagnetic spectrum. Sun's rays travel through vacuum before entering the earth's atmosphere.

These rays can travel through vacuum. The speed with which electromagnetic waves travel is the same as the speed of light .

The mechanical waves are the longitudinal and the transverse waves. They require a medium to travel. In the absence of a material medium they cannot travel. Material media are  like air, water, oil, glass etc.

That's why even though both mechanical and electromagnetic waves are generated by the Sun, it is the electromagnetic waves that reach the earth.

A body mass 30 kg is traveling in space at a speed of 10 m/s. Given that the formula for kinetic energyis KE = 0.5 * m * v^2, and m is mass, v is speed

Answers

The kinetic energy of a body with a mass of 30 kg and a speed of 10 m/s is  1500 kg m²/s².

In physics, the kinetic energy of аn object is the form of energy thаt it possesses due to its motion. In the case above, we are given the formula for kinetic energy:

KE = 0.5 * m * v²

where m is mass and v is speed. And we are given m = 30 kg and v = 10 m/s.

To calculate the kinetic energy, we simply plug in the values of m and v into the formula:

KE = 0.5 * 30 kg * (10 m/s)²

Simplifying the equation gives:

KE = 0.5 * 30 kg * 100 m²/s²

KE = 15 kg * 100 m²/s²

KE = 1500 kg m²/s²



Therefore, the kinetic energy of the body is 1500 kg m²/s².

For more information about kinetic energy refers to the link: brainly.com/question/26472013

#SPJ11

Answer:

The kinetic energy of a body mass of 30 kg traveling in space at a speed of 10 m/s can be calculated with the formula KE = 0.5 * m * v^2, where m is the mass of the body and v is the speed. In this case, the kinetic energy would be equal to 0.5 * 30 * 10^2 = 1500 Joules.

In which situation is the acceleration of the car negative?

Answers

When a car is slowing down, it has a negative acceleration.  Although it is not going a negative speed, it is decreasing in velocity, which is the definition of a negative acceleration.

Hope this helps!

The car's acceleration is negative if ...

-- it's going slower and slower in the direction that you call 'positive',

OR . . .

-- it's going faster and faster in the direction opposite
to what you call 'positive',

OR . . .

-- it's driving around in a circle AND you call the direction
OUT from the center of the circle the 'positive' direction. 

A device that uses electricity and magnetism to create motion is called a _________motor,magnet,generator . In a reverse process, a device that uses motion and magnetism can be used to create ________ light,electromagnetism,electricity

Answers

Answer:

1. motor

2. electricity

Explanation:

A motor uses electromagnetism or electricity and magnetism to create motion. A motor converts electric energy into mechanical energy.

On the other hand, the reverse process of using motion and magnetism will create electricty. It will convert the mechanical energy to electrical energy. And the machine that does it is called a generator.

A device that uses electricity and magnetism to create motion is called a "Motor" (which converts electric energy into mechanical energy) & In a reverse process, a device that uses motion and magnetism can be used to create "Electromagnetism".

In short, 1st Blank = Motor
2nd Blank = Electromagnetism 

Hope this helps!
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