Physics, 05.05.2020 22:28 trinidymwilga
An echo is heard when sound is reflected off a surface. Which of the following best explains this phenomenon?
Answers: 3
Physics, 22.06.2019 08:30
What properties of a moving object are used in determining the object's energy of motion
Answers: 2
Physics, 22.06.2019 23:40
A2.50 × 105 w motor is used for 26.4 s to pull a boat straight toward shore. how far does the boat move toward shore if a force of 4.20 × 104 n is applied by the motor?
Answers: 2
Physics, 23.06.2019 00:10
An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?
Answers: 3
Physics, 23.06.2019 02:50
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
An echo is heard when sound is reflected off a surface. Which of the following best explains this ph...
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