The picture shows a loaded cart of mass 50 kg being pulled. The cart moves with a constant velocity, and the coefficient of kinetic friction between the man and the ground is 4k = 0.25. The angle formed by the rope with the horizontal is 45°.
What is the amount of tension in the string?
A)
138.6 N
B)
183.6 N
213.6 N
D)
313.6 N

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?