A block starts at rest and slides down a 3 meter long incline plane at 30 degrees in 3 seconds. Calculate the coefficient of kinetic friction between the block and the incline plane. Hint: use kinematics to find the acceleration, then use a force diagram to solve for the coefficient of kinetic friction.2 AnswersPhysics7 months ago
A block of mass 10kg slides on an incline plane of 30 degrees while attached to a second mass of 2kg by a rope.?
A block of mass 10kg slides on an incline plane of 30 degrees while attached to a second mass of 2kg by a rope. The rope runs through a pulley and the second mass is hanging from the top of the ramp. Define the positive direction such that the first mass slides down the ramp. The coefficient of kinetic friction between the first mass and the incline plane is 0.1. Calculate the acceleration of the two mass system.2 AnswersPhysics7 months ago
A block of mass 3.00 kg is pushed up against a wall be a force that makes an angle of 50° with the horizontal. ?
A block of mass 3.00 kg is pushed up against a wall be a force that makes an
angle of 50° with the horizontal. The coefficient of static friction between the wall and the block is 0.25.
(a) What is the force required to keep the block from
(b) What is the maximum force that can be applied before the block
slides upward?1 AnswerPhysics8 months ago
A bag of cement of mass 33 kg hangs in equilibrium from two wires which make angles of 60° and 40° with the horizontal. ?
(a) Draw a diagram including the applicable forces.
(b)Use Newton's Second Law to relate the forces in the y-direction.
(c) Use Newton's Second Law to relate the forces in the x-direction.
(d)Use (a) and (b) to solve for the tension in the two wires.1 AnswerPhysics8 months ago
2 NO(g) + O2(g) 2 NO2(g)
Calculate the equilibrium constant for the reverse reaction.2 AnswersChemistry1 year ago
Rate data were obtained for the following reaction. Find the rate-law expression and the value of “k” A + 2 B C + 2 D?
Experiment [A] [B] Rate of formation
1 0.10 0.10 0.0003 M/min
2 0.30 0.30 0.0009 M/min
3 0.30 0.10 0.0003 M/min
4 0.40 0.20 0.0006 M/min1 AnswerChemistry1 year ago
1.If the following radioactive decays follow first order kinetics, calculate “k” with respect to seconds.?
a. Half life of 131I is 8 days
b. Half life of 90Sr is 27.6 years
c. Half life of 3H is 12.26 years.3 AnswersChemistry1 year ago