Please help me out. I have completed my graduation successfully but still iam unemployed it's more than an year. I have given a lot of competitive exams but i have failed in every exam. My parents lost hopes on me and my girlfriend is also angry on me.Next month i have a big exam i should crack that at any cost kindly give me important tips and suggest some important mechanical books for preparation and tell me how should i start my preparation and how many hours shall i study in a day. Thank you.

A stone is thrown straight up from the top of 42.5 m high cliff with a velocity of 18.5 m/s. I need help with part c ) How long will it take to hit the ground below and d) with what velocity will the stone hit the ground below?

A 1.55 block slides with a speed of 0.895 on a frictionlesshorizontal surface until it encounters a spring with a forceconstant of 721 . The block comes to rest after compressing thespring 4.15 . 1. Find the spring potential energy, , the kinetic energy of theblock, , and the total mechanical energy of the system, , forcompressions of 0 . 2. Find the spring potential energy, , the kinetic energy of theblock, , and the total mechanical energy of the system, , forcompressions of 1.00 . 3. Find the spring potential energy, , the kinetic energy of theblock, , and the total mechanical energy of the system, , forcompressions of 2.00 . 4. Find the spring potential energy, , the kinetic energy of theblock, , and the total mechanical energy of the system, , forcompressions of 3.00 . 5. Find the spring potential energy, , the kinetic energy of theblock, , and the total mechanical energy of the system, , forcompressions of 4.00 .

"A cooling unit for chilling the water of an aquarium gives specifications of mechanical power of 1/10 hp and cooling power of 1270 Btu/h. Assuming the unit produces 1/10 hp at 70.0% mechanical efficiency (i.e. 70% of input electric power is converted to mechanical work), calculate its performance coefficient."

A cooling unit for chilling the water of an aquarium gives specifications of mechanical power of 1/10 hp and cooling power of 1270 Btu/h. Assuming the unit produces 1/10 hp at 70.0% mechanical efficiency (i.e. 70% of input electric power is converted to mechanical work), calculate its performance coefficient.

A 1.00kg block slides with a speed of 0.880m/son a frictionless horizontal surface until it encounters a spring with a force constant of 450N/m . The block comes to rest after compressing the spring 4.15 cm. Part A Find the spring potential energy, U , the kinetic energy of the block, K , and the total mechanical energy of the system, E , for compressions of 0 cm. Part B Find the spring potential energy, U , the kinetic energy of the block, K , and the total mechanical energy of the system, E , for compressions of 1.00 cm. Part C Find the spring potential energy, U , the kinetic energy of the block, K , and the total mechanical energy of the system, E , for compressions of 2.00 cm. Part D Find the spring potential energy, U , the kinetic energy of the block, K , and the total mechanical energy of the system, E , for compressions of 3.00 cm. Part E Find the spring potential energy, U , the kinetic energy of the block, K , and the total mechanical energy of the system, E , for compressions of 4.00 cm.

How does the setup shown in the picture affect the mechanical advantage required to lift the clay block? A. The setup does not change the amount of force required to lift the block. B. The setup increases the amount of force required to lift the block and, therefore, decreased your mechanical advantage. C. The setup decreased the amount of force required to lift the block and, therefore, increases your mechanical advantage.

(a)Compare the changes in total mechanical energy in walking and running. Specifically, consider what happens as your front foot lands on the ground in each case. What happens to the total mechanical energy while walking? What happens while running? (b) how can you explain this difference between running and waking in total mechanical energy as the front foot lands in terms of forces and work>( hint: think about the definition of work, and how the shape of your leg changes when you run).

MEchanical Engineering HW Help me asap MEchanical Engineering HW Help me asap

plz............................................................. what is mechanical engineering?

what is thermodynamics as used to refer to terms in mechanical engineering?

Mechanical engineering design help! See attachment

Questions on shear, torsion and stress.........................................

Does mathematical questions come to the physics second midterm exam? Chapter 3 seems like a lot of mathematics than physics.

a communication satellite in a circular orbit at an altitude of 500km makes one complete revolution in 95 minutes. what is the centripital accleration of the satelite