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A child pedals a tricycle, giving the driving wheel an angular speed of 0.403 rev/s. If the radius of the wheel is R= 0.360 m, what is the child's linear speed?
question1 a high speed train in japan travels a distance of 300 kilometres in 3.60x103 seconds. what is an average
What must be the temperature of the cold reservoir in order to increase the efficiency to 29.0%
A 1200 kg frictionless roller coaster starts from rest at a height of 22 m. What is its kinetic energy when it goes over a hill that is 13 m high
Robin hood aims a 500 g arrow at a 2 kg bird perched on a tree. The arrow is released with a speed of 40 m/s at an angle 30 degrees to the horizon. How far from the tree base do the bird and arrow land
an electron in an x-ray machine is accelerated through a potential difference of 1.00 times 104 v before it hits the
If a Saturn V rocket with an Apollo spacecraft attached has acombined mass of 2.6 multiplied by 105 kgand reached a speed of 11.2 km/s, how much kinetic energy would it then have
A pion is an unstable particle that has an average lifetime of 2.55 × 10-8s. How far does it travel in its lifetime, relative to Earth
A rotating flywheeel can be used to store energy. what is the moment of inertia of the wheel
Estimate how long it will take to heat a cup of soup. What is the net force exerted on the skier.
A circuit consists of two 150.?k? resistors in series with an ideal 12.0?V battery. Calculate the potential drop across one of the resistors
a recreational aircraft has a lift- off speed of 110 km/hr. If the aircraft has a constant acceleration of 5m/s^2, what minimum runway length does it need for take off
river pascal with a volume flow rate of 5.8times105 joins with river archimedes which carries 1.14times106 to form the
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