PHYSICS HIGH SCHOOL

Which of these is not a resistor?a. wire
b. light bulb
c. hair dryer
d. all of these are resistors

Answers

Answer 1
Answer: The correct answer is (d.) all of these are resistors. A resistor creates the reduction of the current flow and voltage levels within the circuits. A wire is a resistor because it is made up of alloy and carbon that helps to maintain a low resistance and have an easy flow of the electric charges. Same as the light bulb and the hair dryer, they all reduce the current flow.

Related Questions

Which of the following scientists was a student of Tycho Brahe and gathered data that confirmed the heliocentric model of the solar system?Galileo Kepler Newton Ptolemy
Imagine that you are sitting in a closed room (no windows, no doors) when, magically, it is lifted from Earth and sent accelerating through space with an acceleration of 1g (9.8 m/s2). According to Einstein's equivalence principle, which of the following is true?You won't feel any change and will have no way to know that you've left the earth.You'll feel a force that will cause your head to repeatedly bang into the ceiling.You'll know that you left the Earth because you'll be floating weightlessly in your room.You'll know that you left the Earth because when you drop a ball it will fall sideways.
People working in nuclear plants wear special monitoring devices to track their exposure to radiation. Radioactive materials used in plants emit particles but they also emit high energy waves that are potentially lethal to human life. These waves are ______ waves
A ball is projected horizontally from the top of a 92.0-meter high cliff with an initial speed of 19.8 m/s. Determine: (a) the horizontal displacement and (b) the final speed the instant prior to hitting the ground.
By connecting two identical storage batteries together in series ("+" to "-" to "+" to "-"), and placing them in a circuit, the combination will yield:a. zero volts.b. twice the voltage and the same current will flow through each.c. the same voltage and different current will flow through each.d. twice the voltage and different currents will flwo through each.

How much force is needed to accelerate a 68 kilogram-skier at a rate of 1.2 m/sec^2?

Answers

Answer: Force = 81.6 N

Explanation:
According to Newton's Second law:
F = ma --- (1)

Where F = Force = ?
m = Mass = 68 kg
a = Acceleration = 1.2 m/s^2

Plug in the values in (1):
(1) => F = 68 * 1.2
F = 81.6 N (The force needed to accelerate the skier at a rate of 1.2 m/s^2)

Answer:

The force needed to accelerate a 68 kilogram-skier at a rate of 1.2ms2 is 81.6 Net forces

Explanation:

If an electric charge is accumulated on an object, it is referred to as _____

Answers

Static, because it stays on the object.
It is referred as Static Electricity.

Manuel releases a pendulum bob. The drawing shows its path. After the pendulum bob is released, how does the kinetic energy change?A.
It does not change.

B.
From C to D, it increases.

C.
From C to D, it decreases.

D.
It continues to increase as it swings back and forth.

Answers

From C to D, it increases.

How much work does a person do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force?

Answers

There's an equation that says work = force * distance * cos (theta)

Theta being the angle between the surface and the object.

So, since the direction is the same as that of the force, you can say that theta is equal to zero.

Cos (0) = 1

So, W = (10) * (4) * (1) = 40 Joules

Which system of units do scientists use to make their data understandable to each other

Answers

Scientists use the SI system of units, or the International System of units. Hope that helped you.
International System of Units (SI)

What do tire treads, rubber mats, automobile breaks, and tennis shoes have in common. -They reduce friction
-they are lubricants
-they increase friction
-the reduce static electricity

Answers

Tire treads, rubber mats, automobile brakes an tennis shoes increase friction. They prevent from slipping by increasing friction.
They all Increase friction, when you are stopping the shoe or car is creating friction so you are able to stop. 
Other Questions
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A baseball on a T-ball stand has no momentum until it is hit with a bat. When Tyler swings the bat, it has a momentum of 12 kg m/s. After the bat hits the ball, the ball has a momentum of 8 kg m/s. What is the momentum of the bat AFTER it hits the ball
a 0.4 kg block rests on a desk. the coefficient of static friction is 0.2. You push the side of the block but do not have a spring scale to measure the force you use. the block does not move. which statement is true about the force of static friction?
What are different type of plastids explain them?​