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A car driver has rear ended a truck but claims he was driving the speed limit before hitting the brakes. The driver left a 50m long streak of tire rubber when he slammed on the brakes. The mass of the drivers car is 1000kg. The coefficient of friction between the tire and asphalt is 0.5. The mass of the truck that got hit is 5000kg. The speed limit for the road is 40mph. What was the magnitude of the acceleration of the car? (Remember that magnitudes are always positive). How fast was the car going right before the driver slammed on the brakes?
An observer measures the free-fall acceleration in an elevator near the surface of the Earth. hat would the value and direction be if the elevator accelerates upward at 2 m/s2
An Airplane is flying un a horizontal circle at a speed of 100 m/s.The 80.0 kg piolot does not want her radial accerlation to exceed7g. What is the minimum radius of the circular path
An empty metal box with a mass of 0.275 kilogram is moved along a conveyor belt at a constant speed of 1.34 m/s before sliding across a frictionless track. Find the momentum and kinetic energy of the box when it leaves the conveyor belt
q1. a toroidal solenoid has a mean radius of 11.0 cm and a cross-sectional area of 5.00 cm2 and is wound uniformly with
Refer to Conceptual Example 8 as background material for this problem. The drawing shows a horizontal beam of light that is incident on a prism. The base of the prism is also horizontal. The prism (n = 1.20) is surrounded by a liquid whose index of r..
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1360 W/m2. Determine what is the average energy density
A beam pivoted at one end has a force of 5.0 N acting vertically upwards on it as shown. The beam is in equilibrium.pivot2.0 cm 3.0 cm
A .400 kg object isswinging in circular path and in a vertical plane on a .500 mlength string. what is the tension on the string when the object is at the bottom of the circle
two blocks of mass m1 and m2 approach each other on a horizontal table with the same constant speed, Vo, as measured by a laboratory observer. Determine the ratio of the two masses m1/m2
A parallel-plate air capacitor of area A= 19.0 cm2 and plate separation d= 2.80 mm is charged by a battery to a voltage 58.0 V. how much additional charge will flow from the battery onto the positive plate
in the rectangle in the drawing a charge is to be placed at the empty corner to make the net force on the charge at
Find what frequency sound has a 0.400 meter wavelength when the speed of sound is 344 meter per second
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