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You are driving your new 911 turbo Porsche on river road (no police). You enter a curve with a radius of 100m on a flat road. How fast can you drive into the corner without losing traction and sliding off the road if the coefficient of static friction is 0.9? If the speed limit is 60mi/hr are you speeding?
To measure her speed, a skydiver carries a buzzer emitting a steady tone at 2500 Hz. Assume the air is calm and the speed of sound is independent of altitude. what beat frequency does she hear
A second skater initially at rest with a mass of 58.4 kg catches the snowball. What is the velocity of the second skater after catching the snowball in a perfectly inelastic collision
A 100 kg football linebacker moving a 2 m/s tackles head on an 80kg halfback running 3 m/s. Assume the two players were initiallyrunning directly at one another. Neglecting the effects due to digging in of cleats.
A box of mass m = 5 kg sits at the top of a ramp of mass M = 20 kg and height h = 2.0 m with incline angle ? = 30°. What are the final velocities (magnitude and direction) of the ramp and the box
A bedroom bureau with a mass of 57 kg, including drawers and clothing, rests on the horizontal floor. What is the static friction force on the bureau initially
An inductor used in a dc power supply has an inductance of 12.0H and a resistance of 170 OMEGA . It carries a current of 0.300 A. What is the energy stored in the magnetic field
a playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel after the person climbs aboard
Find the thermal conductivity of the material from which the box is made.
A 1.2 kg coffee cup is accelerated at 3.0 m/s^2 in the direction shown, over a frictionless horizontal surface. Find the magnitude and direction (with respect to the positive x axis) of the third force, F3
The resolving power of a microscope depends on the wavelength used. If you wanted to "see" an atom, a wavelength of approximately 1 × 10-11 m would be required.
q1. a motorist travelling with constant velocity of 15 ms about 34 mph passes a school crossing corner where the speed
(a) A clear image of an object is formed on the retina of a human eye. As the object moves closer to the eye, for a clear image to still be formed on the retina.
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