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A 920 kg sports car collides into the rear end of a 2300 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.6 m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.30, calculates the speed of the sports car at impact. What was that speed?
An elevator can lift a 107 N aircraft a distance of 26 meters in 11 s. What is the power output of the elevator
A 30-mph wind blows at an angle of 8 degrees to the plane of a signboard that is 12ft long by 2 ft wide. Using CL=0.52 and CD=0.09 Calculate the force acting on the signboard at right angles to the wind direction and the force acting parallel to the ..
question1astronomers detect a large asteroid that far away but still heading toward earth at 754 ms. a straight
Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 5.0). What must be the potential difference across the plates of the capacitor filled with a dielectric
A solid disk of radius R and mass 2.72 kg is spinning at angular velocity 63.9 rpm about a vertical axis. What is the mass of the second disk
A 43 kg flywheel with a radius of gyration of 0.20 m is supported on a single bearing at its center of rotation. Determine the time required for the friction to stop the flywheel from rotating. Also determine the angular displacement in this time pe..
Kathy Kool buys a sports car that can accelerate at the rate of 5.20 m/s2. She decides to test the car by racing with another speedster, Find the time it takes Kathy to overtake Stan
Before embarking on a car trip from Michigan to Florida to escape the winter cold, What is the new pressure in your tires, in SI units
A thick-shelled hollow metal sphere contains in its cavity 2.0 nC of charge. What is the flux emanating from the outer surface
The chin-up is one exercise that can be used to strengthen the biceps muscle. How much work can the biceps muscles (one in each arm) perform in a single contraction
As you eat your way through a bag of chocolate chip cookies, you observe that each cookie is a circular disk of diameter of 5.70 ± 0.02 cm, Find the average volume of a cookie
compute the distance x the spring was compressed.
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