Which of the following colors are part of the visible spectrum?

A. violet

B. blue

C. red

D. all of these

An electric current produces a magnetic field. a. True b. False

A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 29° above the horizontal. If the normal force exerted on the suitcase is 160 n, what is the force f applied to the handle?

The scientific theories to the law of parsimony?

A bottle of ketchup is placed on a white table that is illuminated by a blue light source and a yellow light source. What color does the white table appear under these lights?

What SI unit replaces the pound. what does this measure

Can a simple machine's efficiency ever be greater than 100%? Explain your answer.

A fishbowl has a circular opening with a diameter of 13 cm. The fishbowl sits upright on a table in a magnetic field of 0.00110 T that is directed downward. What is the flux through the glass of the bowl? -1.5*10^-5 Wb -4.5*10^-4 Wb 0.0 Wb -5.

Why do cars need a cooling system in conjunction with the engine

A runner starts from rest and has an acceleration of 3 m/s2. How fast is she running after 1.1 seconds

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?