Can the sum of two equal vectors be equal to either vector?

A 10 kg object dropped from a certain window strikes the ground in 4.0 s. neglecting air resistance, a 5 kg object dropped from the same window strikes the ground in

To which classification do compounds belong? A. heterogeneous mixtures B. pure substances C. homogeneous mixtures

The electric current running through the wire coil in an electric motor exerts force directly onto A) the battery. B) an aluminum axle. C) a powerful magnet. D) a rubber insulator.

If a 15 kg mass accelerates at a rate of 4 m/s2, what net force acts on it? A 15 N B 4N C 3.75 N D 60 N E. 267 N

A hot air balloon is rising vertically with a velocity of 10.0 feet per second. A very small ball is released from the hot air balloon at the instant when it is 960 feet above the ground. Use a (t) = -32 ft/sec2 as the acceleration due to gravity. 1.

1. A moving object with a mass of 8.8 kg has linear momentum of magnitude 13 kg mis. What is the kinetic energy of the object? a) 19) b) 4.8 c) 9.63 d) 0.743 e) 38)

During soccer practice, Maya kicked a soccer ball 37° off the ground at 25 m/s. What was the ball's speed 2.2 s after she kicked it?

Chlorine is the atomic number 17 in the periodic table of elements. What information does the atomic number give you about the element chlorine? A) An atom of chlorine has 17 protons+. B) An atom if chlorine has 17 protons + and electrons-.

Which type of orbital will be occupied by the electrons of highest energy for the In + ground-state ion?

Consider a "crystal" consisting of two nuclei and two electrons. (a) Taking into account all the pairs of interactions, find the potential energy 1 of the system as a function of d.