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A baseball is thrown with an initial velocity of 20 m/s along the horizontal axis and 15 m/s along the vertical axis. The ball soon reaches the highest point, what is the speed at the point? (ignore air friction) Can you give me an explanation as to how you got the answer as well?
You have probably never noticed time dilation effects in everyday life. Calculate the speed that a friend would have to move with respect to you so that your measured time intervals are 1.00% larger than hers
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
An airplane has a speed 560 km/h. If a wind begins blowing from the southwest at a speed of 86.3 km/h, what will be the angle of west of south
A box weighing 77.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exert on the box if the weight hanging on the other side of the pulley ..
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 40.0 kg and diameter 72.0 cm. How many revolutions would the wheel have made during this time
Determine how long it would take an astronaut to fall from a height of 2 meters on the Moon. Compare this time to the time it would take the astronaut to fall the same 2 meters on the Earth. Also, compare the time to the time it would take on the ..
Identify the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown.
A filing cabinet weighing 556 N rests on the floor. The coefficient of static friction between it and the floor is 0.68, In which of the attempts does the cabinet move
A generator driven by a diesel engine that develops 12 hp delivers 28 A at 240 V. What is the efficiency of the generator
A current of 16.0A flows through an electric heater operating on 120 V. Compute the power consumption of the electric heater
A certain type of laser emits light that has a frequency of 5.4 x10^14 Hz. The light, so, occurs as a series of short pulses, each lasting for a time of 2.7 x10-11 s.
An elastic cord is 64 cm long when a weight of 56 N hangs from it and is 69 cm long when a weight of 83 N hangs from it. What is the "spring" constant of this elastic cord.
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