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A Locomotive of mass 80 tonne, hauls 11 coaches each has a mass of 20 tonne up an incline of 1 in 80. The frictional resistance to motion is 50 N/tonne. If the train accelerates from 36 to 72 km/h in a distance of 1600m, determine the :
A. The change in potential energy of the train
B. The change in kinetic energy
C. The work done against frictional resistance
D. The total mechanical energy required.
Three metal fishing weights, each with a mass of 1.00x102 g and at temperature of 100oC, are placedin 1.00x102g of water at 35oC. The final temperature of the mixture is 45.0oC. What is the specific heat of the metal in the weights?
An extreme distance runner is having an easy training day and runs 34 km west over 3 hours, Calculate his/her distance, displacement, speed and velocity for the entire training session
A 66 kg solid sphere with a 14 cm radius is suspended by a vertical wire. What is the period of the oscillations
A 3.30-g copper coin at 21.0°C drops 45.0 m to the ground. (Assume the specific heat of copper is 387 J/kg · °C.) determine the coin's final temperature
A four-turn rectangular coil has a spatially varying magnetic field directed through its center as shown. The magnetic field is given by [(B)\vec] = 4.2 y2 t [^(k)], Find the direction of the induced current in the coil
Two point charges are separated by 10.0 cm and have charges of +2.00 uC, What is the electric field at a point midway between the two charges
A student walks away from a wall. The student is holding a 455 Hz. audio source. If the student walks away at 1.65m/s, What beat frequency does the student hear
A water skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. find the work done by the net external force acting on the skier
Suppose 1500 J of heat are added to 5.6 mol of argon gas at a constant pressure of 120 kPa. Calculate the change in volume of the gas
falling from the suface of the earth through its center to the other surface of the other side. 1 how many hrs will it
A block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of a string that passes over a frictionless pulley that does not affect the motion of the block or ball. The ramp is 3.40 meters long and ..
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor, How tall is the tower
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