A vector of magnitude 20 is added to a vector of magnitude 25. The magnitude of this sum. might be:. A. zero. B. 3. C. 12. D. 47. E. 50

A copper wire has a length of 1.50 m and a cross sectional area of 0.380 mm2. If the resistivity of copper is 1.70 ✕ 10-8 Ω · m and a potential difference of 0.700 V is maintained across its length, determine the current in the wire (in A).

How many calories are equal to one BTU? (One calorie = 4.186 J, one BTU = 1 054 J.) a. 0.252b. 3.97c. 252d. 397

How many normal modes of oscillation or natural frequencies does each if the following have: ( a. a simple pendulum ( b. a clothes line ( c. a mass oscillating on a spring?

a roller coaster is hard to stop because it has a lot of inertia. Use Newton's first law of motion to explain why you feel tossed around whenever a roller coaster goes over a hill and through a loop.

According to the law of conservation of energy what ultimatly happens to the total amount of energy in the universe?

When a car turns a corner on a level road, which force provides the necessary centripetal acceleration? 1) gravity 2) normal force 3) air resistance 4) tension 5) friction

Use Newton's universal law of gravitation to explain why gravity is greater on Earth than on Mercury.

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs