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A woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 65.0 km/h for 15.0 min, 70.0 km/h for 25.0 min, makes a stop for 40.0 min, then continues at 45.0 km/h for 30.0 min, at which point she reaches her destination.
(a) What is the total distance between her starting point and destination (in km)?
(b) What is the average speed for the entire trip (in units of km/h)?
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
Two children are playing on a teeter totter at the park 10 ft long. Find how far from the left child should the fulcrum be located to balance the children
You throw a ball straight down from an apartment balcony to the ground below. find the height of the balcony
A trap door, of length and width 1.65 m, is held open at an angleof 65.0 degree with respect to the floor. what is the torque exerted on the trap door by the rope
When a diver jumps into the ocean, water leaks into the gap region between the diver's skin and her wetsuit, estimate how much energy (in units of candy bars = 300 kcal) is required by this heating process
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
A stunt man drives a car at a speed of 20 m/s off a 32-m-high cliff. How far from the base of the cliff does the car land
what weight is used for the cut-separating the lightest 4% from the others?
You are standing on a sheet of frictionless ice and throw a ball of mass 0.640 kg horizontally at a speed of 8.00 m/sec to your friend. Your mass is 75.4 kg, and your friend’s mass is 38.0 kg.
A sleigh slides down a snowy incline 14° to the horizontal, with coefficient of kinetic friction µk = 0.29. Find the acceleration of the sleigh as it slides down the incline
A gun shoots bullets that leave the muzzle with a speed of 338 m/s. If a bullet is to hit a target 104-m away at the level of the muzzle, the gun should be aimed at a point above the goal.
A dragster drives a quarter mile (402 m) at a constant rate of acceleration, starting from rest and finishing the race at a final speed of 450 km/hr. what average power was developed by the engine
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