a force of 20 N acted on a ball thereby imparting an impulse of 70 Ns to the ball. For how long did the force act on the ball?

The law of conservation of energy states that A) energy may be created, destroyed or transformed. B) energy may be created, but only in certain types of nuclear reactions. C) energy may neither be created nor destroyed; it may only be transformed.

A sealed pressure cooker allows steam to escape only through an opening in the lid. a separate metal object, called a petcock, sits on top of the opening and prevents steam from leaving until the pressure within the cooker overcomes the weight of

What is an non example of Cultural diffusion

The electric potential inside an object made from a conducting material is

Which processes transfer energy from the core to the photosphere

If you were told an atom was an ion, you would know the atom must have a

When a potential difference of 13 V is placed across a resistor, the current in the resistor is 1.4 a. What is the resistance of the resistor?

Person with a mass of50 kg jumps up from the earth with an acceleration of 20 newtons. what is his acceleration?

The electron are accelrated to a speed of 2.40*10^7 in 1.8*10^-9, the force experinced by an electron?

You are given two positively charged particles, of equal magnitude, separated by a distance, "d". What will happen to the force field between the two particles when "d" is doubled?