An electric motor must have which of the following in order to work?

galvanometer, power source, secondary coil, or primary coil

A baseball of mass 0.143 kg is thrown from the roof of a building 23.1 m above the ground. Its initial velocity is 37.6 m/s at an angle of 45◦ above the horizontal. The acceleration of gravity is 9.81 m/s 2.

What is a hernia? (A) cold sores (B) an inflammation (C) a protrusion (D) a congenital abnormality

A ball on the end of a string is spinning around a circle with a radius of 5 centimeters. If in a central angle of radian has been covered, what is the angular speed of the ball?

Compare to a low wavelength sound wave, a high wavelength sound wave Select all that apply Group of answer choices travels slower has a smaller frequency travels at the same speed has a higher frequency travels faster has the same frequency

Objects falling through air experience a type of friction called

A student conducts and investigation to determine a ball's mass, displacement, velocity and acceleration. (A) Identify each of the following as wither a vector or scalar quantity: Mass, Displacement, Velocity & Acceleration.

A ball is rolling down a hill at + 1.0 m/s, The ball is uniformly accelerating at +4.9 m/s?, What will the ball's velocity be 4.0 s later? +8.9 x 100° m/s +2.0 x 10^1 m/s +2.1 x 10^1 m/s -1.9 x 10^1 m/s

What is the difference between unicellular and multicellular organisms?

Is momentum conserved in the collision?

Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin?