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Problem: A car travels along a certain road at an average speed of 43 km/h, and returns along the same road at an average speed of 57 km/h.
Part A: Calculate the average speed for the round trip, to within 0.1 km/h.
Please show your results in detailed calculations to calculate the average speed for the round trip.
While standing on a bridge 45m above the ground, you drop a stone from rest. When the stone has fallen 4.90m, you throw a second stone straight down. What initial velocity should you give the second stone if they are both to reach the ground at th..
a block weighing 62.5 n rests on a plane inclined at 25.0deg to the horizontal. a force f is applied to the object at
Three equal positive point charges of magnitude Q = 7.00mu C are located at three corners of a square of edge length d = 5.6 cm. What is the magnitude of the attractive force on the negative charge
A particle that is moving in a straight line slows uniformly from 50.0 m/s to 20.0 m/s in 6 second. Determine how far did the particle travel during these 6 seconds
A 804 kg car is going 20 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads
A ball is dropped from a height of 63 centimeters andrebounds to a height of 40 centimeters. Calculate the coefficient of elasticity for the ball
compute the electric flux through a rectangular plane.
Discover the electric energy density among the plates of a 225-F parallel-plate capacitor. The potential difference among the plates is 390V , and the plate separation is 0.278mm .
The angle between the electric field vector and the vector normal to the rectangular plane is 65.0 degrees. Illustrate what is the electric flux through the rectangle?
question in a series rl circuit a 1.2-khz oscillating emf has amplitude epsilonmax 24 v and the current amplitude is
The drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right side. Theinitial speed of the electron is 1.88 x 106 m/s. The capacitor is 2.00 cm long, and its plates are separated by 0.150cm.
A 581-{\rm N} physics student stands on a bathroom scale in an 821-{\rm kg} (including the student) elevator that is supported by a cable. Find the magnitude of the acceleration of the elevator
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