What is the mass of a child if the force of gravity on the child's body is 100 N?

A scientific law is a statement that describes some aspect of the world. It is based on repeated experimental observations.

Fact or characteristics of nucleic acid

20 kg object travels 28 meter and stops. coefficient friction = 0.085 how much work was done by friction?

A 60.0-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then drops through a height of 1.57 m, and ends with a speed of 8.50 m/s. How much nonconservative work was done on the boy

What are the principals of electric arc welding

A tight rope walker traverses a wire with the aid of a balancing pole. The moment of inertia of the person about their COG (Iperson) is 15 kg m^2. The moment of inertia of the pole about its COG (Ipole) is 250 kg m^2.

If ta battery on a circuit is a 9-volt battery, each light on the circuit gets what

When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? A. It increases. B. It decreases. C. It remains the same. D. It sharply increases, and then decreases.

Electrons flow in the wire from a (n) terminal to a (n) terminal

A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain? A) 2.5 grams B) 5.0 grams C) 10.0 grams D) 40.