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A 2300 kilogram car, moving at 15 m/s collides with a bridge abutment, which stops it in 0.56 second. Find the magnitude of the average force that acts on the car during impact?
The figures show a hypothetical planetary system at two different times. The spatial coordinates (x, y) of the bodies are given in Astronomical Units (AU). Find the magnitude, dS, of the star\'s displacement
A 0.70 kg ball is moving horizontally with a speed of 9.7 m/s when it strikes a vertical wall. What is the magnitude of the change in linear momentum of the ball
A magician pulls a tablecloth from under a 200 g mug located 30.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug, and the cloth is pulled with a constant acceleration of 3.50 m/s2.
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
Given the electrostatic potential field as a function of position V(x,y,z) = 5x^3 y + 5yz +z^2 , determine the electric field vector E
The muon is an unstable particle, with a mean lifetime of 2.5x10^-10 seconds. What is the minimum uncertainty in this particle's energy
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. With what speed did she reach the platform
The leg and cast weigh 200 N, with the center of mass as indicated by the blue arrow. The counterbalance w1 weighs 110 N. find out the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
The electric starter in an automobile equipped with a 12 V battery draws a current of 90.00 A when in operation. What amount of electric energy has been withdrawn from the battery
A 7.70-uF capacitor and a 1250-ohm resistor are connected in series to a generator operating at 50 Hz and producing an rms voltage of 208 V. What is the average power dissipated in this circuit
white light 400 - 700 is incident on a 620 diffraction grating. what is the width of the first-order rainbow on a
The deflection in the moving coil galvanometer is reduced to half when it was shunted with a 40 ohm coil. The resistance of the galvanometer is what
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