What is the net torque on the wheel
A 2000kg ferris wheel accelerates from rest to an angular speed of 20.0 rad/s in 12 secs. Approximate the ferris wheel as a circular disk with a radius of 30m. what is the net torque on the wheel?
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Ann is driving down a street at 53km/h. Suddenly a child runs into the street. If it takes Ann 0.709s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m.
Mars has mass of 6.4 * 10 ^ 26 g and a radius of 3400 km. Phobos has a mass of 1.1 *10 ^19 g and radius of 11 km. Phobos orbits mars with a semimajor axis of 9380 km. What is the mean denisit of Mars and Phoos in g/ cm^3?
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 20km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this motion. Determine the electric potential difference.
A train on a straight, level track has an initial speed of 35.0 km/h. How long did it take for the train to travel the 175 m?
Determine the temperature at which an alcohol thermometer with Fahrenheit scale will read the same number as a thermometer with a Celsius scale.
A 10.0-kg mass is placed on a 25.0o degree incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.580, and the coefficient of sliding friction is 0.520. The mass is given a shove causing it to slide down
A 1500kg truck traveling north at 44km/h turns west and accelerates to 55km/h.find the change in the momentum (magnitude and direction) of the truck. calculate the change in the truck's kinetic energy.
A soft synthetic rubber ball of radius 12.5 cm is submerged to 9.2 m beneath the surface of a lake. (a) If the bulk modulus of the rubber compound is Brubber = 8 x106Pa , what is the diameter of the ball at that depth?
What wavelength light would have to fall on sodium (with a work function of 2.46 eV) if it is to emit electrons with a maximum speed of 1.60 multiplied by 106 m/s?
A car drives straight off the edge of a cliff that is 58 m high. The police at the scene of the accident observed that the point of impact is 121 m from the base of the cliff. How fast was the car traveling when it went over the cliff?
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