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Although the altitude may vary considerably, hailstones sometimes originate around 500m (about 1500ft) above the ground.
a) Neglecting air drag, how fast will these hailstones bemoving when they reach the ground, assuming that they started fromrest? Express your answer in m/s and in mph.
Two objects attract each other gravitationally with a force of 2.5×10-10 while they are 0.60 apart. Their total mass is 5.0. Find out their individual masses.
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface, What charge (both sign and magnitude) must be used
a 600kg car is going over a curve with radius of 120m that is banked at an angle 25 degree with a speed 30m/s. what is the normal force exerted by the road on the car
Assume a 40.0-cm-long violin string has a mass of 1.20 g andis vibrating in its fundamental mode at a frequency of 500Hz. What is the wavelength of the standing wave on the string
a steel oil pipeline spans a river gorge 100 m wide. the inside wall is electrically heated to reduce the viscosity of the oil to ease pumping, determine the heat lost per day for the pipe in calories
A parallel-plate air capacitor of area A = 21.9 cm2 and plate separation of d = 3.60 mm is charged by a battery to a voltage of 64.0 V. how much additional charge will flow from the battery
an electron and a proton are initially very far apart effectively an infinite distance apart. they are then brought
a 115 granite cube slides down a 40 frictionless ramp. at the bottom just as it exits onto a horizontal table it
The supertanker Globtik London has a mass of 220,000 metric tons when empty and it can carry up to 440,000 metric tons of oil when fully loaded. What is the draft of the fully loaded tanker
on the apollo 14 mission to the moon astronaut alan shepard hit a golf ball with a golf club improvised from a tool.
An airplane must reach a speed of 189mi/h to take off. If the runway is 472m long, what is the minimum value of acceleration that will allow the airplane to take off successfully.
an explorer is caught in a whiteout in which the snowfall is so thick that the ground cannot be distinguished from the
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