50 joules of work are done on a 1000kg car. what is the speed of the...
a. Suppose 1500 Joules of work is done on a system, and 300 Joules of heat are delivered to the system. What happens to the internal energy of that system? b. What is the efficiency of an engine that takes in heat at 200oC, and rejects heat to the environment at 25oC? Big Hint: REMEMBER to work in Kelvin. c. Bernoulli’s equation shows that pressure in a fluid will tend to drop as velocity increases. Assuming a wind speed...
The air inside a bicycle tire pump has 161 joules of work done on it as 86.2 joules of heat are added to it. What is the change in internal energy of the air?
While a 1000kg car was traveling 50m/s, the brakes are applied to slow it down to 10m/s, what is the total work done on the car. A) 120,000 J B) 1200 kJ C) -120,000JD -1200 kJ E) None of the above vf I A constant force F is applied for 6 seconds to change the particle's velocity from vi to vy. Determine the force F if the particle's mass is 6 kg. A) (17.3 j) N C) (-17.3 j) N...
A
rollercoaster car of 1000kg travels at a speed of 19.2 m/s in point
A, when it enters a vertical loop of radius 3.01 m.Ignoring enegy
losses by friction cslculate the velocity of the car on point B in
the top of the loop. result in m/s. URGENT. IN EXAM
A 1000kg automobile moving with a speed of 24 m/s collides with a 500kg car initially at rest. If the two stick together, what is the velocity (in m/s) of the two cars after the collision relative to an automobile moving in the same direction at 15 m/s?
A car that would normally weigh 9800 N (mass is 1000kg) drives over a hilltop that has a radius of curvature of 120 m at the top of the hill. At what speed would the car be traveling at the top of the hill such that the normal force from the road is only 500 N? Friction is negligible
A m 1 =1000kg car driving at V1i =1.5 m/s on a parking lot collides with a car of mass m 2 =1200.0 Kg sitting at rest. The first car hits and sticks to the second car. Calculate the following: What is the speed of the two entangled cars after Collison? What is the kinetic energy (K 1 I )of the first car before Collison? What is the kinetic energy (K 2 I )of the second car before Collison? e)...
A chemical reaction is run in which 267 Joules of work is done on the system and the internal energy changes by +791 Joules. What is q for the reacting system? 9
A
1000kg car moving at 15m/s to the right collided head-on with
another 1500 kg car who was coming in the opposite direction at a
speed of 20m/s. After collision the two cars interlocked to each
other, and the wreckage dragged with a new speed. What is the lost
of kinetic energy during the collision ?
A 1000 kg moving at 15 m/s to the right collided head-on with another 1500 kg car who was coming in the opposite direction...
A 1250 kg car is moving at 12.3 m/s. Then, 325 kJ of work is done on the car to increase its speed. What will be the car's new speed?