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A spaceship is on a straight-line path between the Earth and the Moon. At what distance from (the centre of) Earth is the net gravitational pull on the probe from the Earth and the moon zero? MEarth = 6 X 1024 kg. MMOON = 7 X 1022 kg. The distance from the Earth to the moon is 380,000 km (measured from the centre of mass of each).
A 13.0-µF capacitor is charged to a potential of 60.0 V and then discharged through a 185-? resistor. How long does it take the capacitor to lose half of its charge
An intergalactic rock star bangs his drum every 1.10 s. A person on earth measures that the time between beats is 2.50 s. How fast is the rock star moving relative to the earth
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.
A person pulls a toboggan for a distance of 34.8 m along the snow with a rope directed 32.2 degrees; above the snow. The tension in the rope is 91.5 N. How much work is done on the toboggan
Capacitors C1= 13 uF and C2=25 u F are each charged to 15 V , then disconnected from the battery without changing the charge on the capacitor plates. estimate the potential difference across each capacitor
A shot-putter accelerates a 7.3 kg shot from rest to 14 m/s. If this motion takes 2.0 s, what average power was developed
In San Francisco, a very simple technique is used to turn around a cable car when it reaches the end of its route. what is the magnitude of the net torque applied to the car
The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert.
You drop a stone into a deep well and hear it hit the bottom 2.40 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels ..
A 254g oscillator has a speed of 99.5cm/s when its displacement is 2.70cm and 85.0cm/s when its displacement is 5.50cm. What is the oscillator's Maximum speed
What is the length of a box in which the minimum energy of an electron is 1.1 x 10^-18J
A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..
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