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The motion of a projectile fired at t=0. It initial speed is 50 m/s and its initial projection angle is 45 degree from horizontal. What is the maximum height? The acceleration due to gravity is 9.8 m/s2. Answer in units of meters?
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
If the flare is fired at the same angle over the flat Sea of Tranquility on the moon, where g = 1.6 m/s2, describe what is its horizontal range?
Solar Radiation is incident on the surface of the Earth at an average of 1000 W/m^2. This is measured on a surface which is perpendicular to the incoming light
A cue ball m1 = 0.39 kg is shot at another billiards ball m2 = 0.59 kg which is at rest. The cue ball has an initial velocity of v =9.5 m/s. What is the cue balls final velocity in m/s
In an experiment on the transport of nutrients in a plant's root structure, two radioactive nuclides X and Y are used. What is the half-life of isotope X
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air. What is the intensity of the sound at the other end of the tube
If a car travelling at 52 km/h will skid 18 m when its brakes lock, how far-off will it skid if it is travelling at 120 km/h when its brakes lock.
What is the magnitude of the acceleration of a falling sky diver (mass 62.5kg including parachute) who has opened her parachute
Four charged particles rest at the corners of a square of side a = 0.30 m. Determine the electric field at the position of particle 3 as well as the electric force on particle 3
A projectile of mass 7 kg is fired with an initial speed of 193 m/s at an angle of 16? with the horizontal. At the top of its trajectory, projectile explodes into two fragments of masses 4 kg and 3 kg.
A 32.8 g piece of aluminium at 72 is dropped into a cavity in an extremely large block of ice at 0. How much ice mice does aluminium piece melt.
1. discuss how a grandfather clock a pendulum clock accurate at 20oc will run fast or slow on a hot day say
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