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A cannon is shot downward from a 195-m high cliff at an angle of 34° with respect to the horizontal. The initial speed is 40.0 m/s. What is its speed when it hits the ground in m/s?
The spin cycles of a washing machine have two angular speeds, 408rev/min and 648rev/min. Find the laundry's maximum radial acceleration
Keeping a constant speed of 0.6 m/s, a marble of mass 18 g rolls back & forth across a shoebox that is 14 cm high & 2 mm thick. Estimate the probability of its escaping through the wall of the box by quantum tunnelling.
A force of 2 N is applied to a stationary 5 kg block for 0.3s. What is the speed of the block after the force is applied
Find density of the object
A pendulum is made with a 4.0 kg mass suspended at the end of a thin rod. What is the length of the thin rod
While john is travelling along an interstate highway, he notices a 166 mile marker as he passes through town. Later john passes another mile marker, 105.
In daily life we see many cases of people who are caught misrepresenting things and who soon after that are excused and accepted by their contemporaries. How is this different in science.
A 10.1-g bullet is fired into a stationary block of wood having mass m = 5.04 kg. The bullet imbeds into the block. What was the original speed of the bullet
A 47.0 g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 25.6 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. J (b) What is its speed when it is 10.0 m below..
A sphere of copper is subjected to 81.1 MPa of pressure. The copper has a bulk modulus of 130 GPa. By what fraction does the radius of the sphere change
A piece of Nichrome wire has a radius of 5.00 x10-4 m. It is used in a laboratory to make a heater that uses 2.00 102 W of power when connected to a voltage source of 120 V. Ignoring an effect of temperature on resistance, estimate the necessary l..
Find the frequency in terahertz of visible light with a wavelength of 441 nm in vacuum
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