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A projectile is fired at an angle of 55.0 degrees above the horizontal with the initial speed of 35.0 m/s. What is the magnitude of the horizontal component of the projectile's motion? How long does it take the projectile to reach the highest point in its trajectory?
The light goes through a second polarizer and exits with an intensity of 225 W/m squared? What is the orientation angle of the second polarizer
A 8500 kg boxcar traveling at 16.8 m/s strikes a second boxcar at rest. What is the mass of the second car
A laser emits a cylindrical beam of light 2.8mm in diameter.If the average power of the laser is 2.6mW , what is the rms value of the electric field in the laser beam?
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.9 g, which includes fuel mass of 13.4 g. What is the average exhaust speed of the engine
In a two-slit experiment, the slit separation is 3.00 Ã- 10-5 m. The interference pattern is recorded on a flat screen-like detector that is 2.00 m away from the slits.
A 5 cm by 5 cm square loop of wire is rotating at 30 rpm in a uniform magnetic field of strength 3.0T. The direction of the field is perpendicular to the axis of rotation of the loop.
A tree is approximated as a 60m tall cylinder with a diameter of 3m. What is the weight of the tree, using p as the unknown density of wood? Calculate the amount of compression of the tree due to gravity.
A boxer receives a horizontal blow to the head that topples him over. The force, of magnitude 1.06 x 10^3 N, is applied for 1.1 x 10^-2 s at a point 1.82 m above the floor. Find the boxer's final angular velocity
Jupiter has the strongest magnetic field in our solar system, about 14 at its poles. Approximating the field as that of a dipole, find Jupiter's magnetic dipole moment
If the free end of the string is held in place and the hoop is released from rest , calculate the angular speed of the rotating hoop after it has descended 0.750m
While a hybrid car brakes to come to a stop at a traffic light, describe the energy transfer and materials used to transfer of this energy
Trucks with diesel engines have an efficience of about 40%. How much energy is requried to accelerate an 8,000kg truck from rest to 25 m/s
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