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A projectile is fired at an upward angle of 40.0 degrees from the top of a 165m cliff with a speed of 195 m/s . What will be its speed when it strikes the ground below? (Use conservation of energy and neglect air resistance.) _____m/s Really hard time working through the algebraic manipulation of the equations.
when we charge any capacitor by applying a battery to a certain voltage, how the energy decreases and why
The potential difference between the accelerating plates of a TVset is about 30 kV. If the distancebetween the plates is 1.0 cm, find the magnitude of the uniform electric field in the region between the plates.
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 9.10 km below the surface. Find the fractional volume change in the spoon due to compression forces
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
A 251 kg wooden raft floats on alake. When a 76 kg man stands on theraft, it sinks 9.0 cm deeper into thewater. When he steps off, the raft vibrates for a while. What is the frequency of vibration
A uniform rod of mass M and length L is sitting vertically with one end resting on a frictionless surface, perfectly balanced. Find the angular velocity of rod just as it hits the ground
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
A 10 Newton effort force is required to lift a 10kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever.
The Earth is 1.49 ? 1011 meters from the sun. If the solar radiation at the top of the Earth's atmosphere is 1 340 W/m2, what is the total power output of the sun?
A series LR circuit consists of a 2.0-H inductor with negligible internal resistance, a 100-ohm resistor, an open switch, what is the maximum power delivered by the power supply
During a tug-of-war, team A pulls on team B by applying a force of 1200 N to the rope between them, How much work does team A do if they pull team B toward them a distance of 1.3 m
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
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