PHYSICS HIGH SCHOOL

The type of wave that can be used to transmit your voice on a cell phone and to cook your food in an oven is a(n)a. X ray.
b. gamma ray.
c. microwave.
d. ultraviolet wave.

Answers

Answer 1
Answer: The answer is
c. Microwave

Related Questions

Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed intoA) electrical energy. B) mechanical motion. C) heat and light energy. D) electrical and heat energy.
How much time will it take a jogger to travel 12 kilometers at a Constant speed of 4 m/s
"Light travels at the rate of 300,000 kilometers per second in a vacuum." Which of these statements is correct about this law? a. It is a fact in nature which cannot be tested. b. It is a theory which is not supported by data. c. It is an observation which cannot be explained. d. It is a description which does not work under similar conditions.
Which would not increase voltage and generate an electrical current?A. a car battery B. a thick wire C. a solar cell D. a generator
A 2000-kg car traveling at 40m/s hits a wall with a force of 40,000N and comes to a stop what was the impact time?A-0.5sB-2sC-400sD-800s

What is SNell's Law ?

Answers

is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, 

A moving 46.6 kg sled feels a 52.9 N friction force. what is the coefficient of friction

Answers

Answer:

The coefficient of friction of the sled is 0.115

Explanation:

It is given that,

Mass of the sled, m = 46.6 kg

Frictional force acting on it, F = 52.9 N

We need to find the coefficient of friction. Frictional force is given by :

F=\mu mg

\mu=(F)/(mg)

\mu=(52.9\ N)/(46.6\ kg* 9.8\ m/s^2)

\mu = 0.115

So, the coefficient of friction of the sled is 0.115. Hence, this is the required solution.                     

What is the wobble method primarily used for in astronomy? A) Detecting comets B) Detecting asteroids C) Detecting extrasolar planets D) Detecting black holes

Answers

The answer is D) detecting extrasolar planets

Which of the following is not a property of water? A) Low density B) Low specific heat C) Low heat of vaporisation D) All of the above

Answers

Answer:

the correct answer is (b) low specific heat

Jumpering out the resistors in a resistance-controlled three-speed fan will cause the motor toa. run at highest speed.
c. run at lowest speed.
b. run at medium speed.
d. stop immediately

Answers

The answer to the question stated above is letter a. run at highest speed.

Jumpering out the resistors in a resistance-controlled three-speed fan will cause the motor to run at highest speed. If resistors are jumpered, the three-speed fan will over speed and probably burns out.

What direction does current flow from a battery in a series circuit?A. From negative to positive terminals
B. From positive to negative terminals
C. In alternating directions
D. In more than 1 direction

Answers

What's now called "Conventional current" is thought of as the flow of positive charge, from the battery's positive terminal to its negative one.

But it turns out that positive charges don't flow. The physical flow of charge is the flow of electrons. They come out of the battery's negative terminal, and carry negative charge around the circuit to the battery's positive one.

B. From positive to negative terminals  is the correct answer.
Other Questions
A spherical raindrop 2.7 mm in diameter falls through a vertical distance of 3950 m. take the cross-sectional area of a raindrop = πr2, drag coefficient = 0.45, density of water to be 1000 kg/m3, and density of air to be 1.2 kg/m3. (a) calculate the speed a spherical raindrop would achieve falling from 3950 m in the absence of air drag.
A charge of 90 C passes through a wire in 1 hour 15 minutes . what is the current in the wire
You can only see stars whose peak intensity of radiation is in the visible band. True False
An explosion occurs 340 km away. Given that sound travels at 340 m/s, the time the sound takes to reach you is a. 1 s. b. 10 s. c. 100 s. d. 200 s. e. more than 200 s.