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1) A tourist from England travels 100 miles from Laramie to Pine Bluffs, then returns to Laramie via Ft Collins traveling 145 miles on the return route. The trip took 4 hours to complete. Calculate the average speed of tourist's car in miles per hour.
2) You push on a 5 Kg mass that is resting on a horizontal surface with a force of 50 N. The horizontal friction force is 20 N. Calculate the acceleration of the 5 Kg mass.
3) A car traveling at 25 m/s ( about 55 mph) crashes into a road barrier and comes to a stop in 0.2 sec. What is the average force in Newtons felt by a 75 Kg person in a set belt?
What is the frequency of string that was tightened.How high does it rise above the ground.
Jane and John, with masses of 51 kg and 66 kg, correspondingly, stand on a frictionless surface 13m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.9m/s2 toward him.
What is the linear speed of the phonograph needle
A 1248.0 g mass is on a horizontal surface with ?k = 0.36, and is in contact with a massless spring with a force constant of 790.0 N/m which is compressed, What is the velocity of the mass as it loses contact with the spring
The coefficient of kinetic friction between a refrigerator (mass 125 kg) and the floor is 0.18, What is the minimum force required to keep it moving with a constant velocity
A projectile is launched straight up at 141 m/s. How fast is it moving at the top of its trajectory? Suppose it is launched upward at 45 degrees above the horizontal plane. How fast is it moving at the top of its curved trajectory and what is the ..
The springs of a 1300 {rm kg} car compress 6.0 {rm mm} when its 62 {rm kg} driver gets into the driver's seat. If the car goes over a bump, what would be the frequency of vibrations.
An electron is accelerated by a constant electric field of magnitude 285 N/C. a. Find the acceleration of the electron (N) b. If the string can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the string breaks.
A certain ac signal at 1000 Hz is applied across an inductor and a 100-ohm resistor. If the power factor of the circuit is 0.4, what is the impedance of the circuit
Mark and Clark are identical twins at the amusement park riding on the bumper cars. Both boys have the same mass, 85kg. The cars are identical with a mass of 120 kg.
A horse canters away from its trainer in a straight line, moving 140m away in 18s. It then turns abruptly and gallops halfway back in 4.9s.
An ac generator with a frequency of 1.54kHz and an rms voltage of 22.2V is connected in series with a 1.90k, What is the power factor for this circuit
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