What is the net torque on the wheel
A 2000kg ferris wheel accelerates from rest to an angular speed of 20.0 rad/s in 12 secs. Approximate the ferris wheel as a circular disk with a radius of 30m. what is the net torque on the wheel?
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A curve of radius 70 m is banked for a design speed of 110 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve?
A newly discovered asteroid is found to have a circular orbit, with a radius equal to 20 times the radius of the Earth's orbit. How long does this asteroid take to complete one orbit around the Sun?
Two identical point charges q = 43.0 pC are separated in vacuum by a distance 2d = 48.0 cm. Calculate the total electric flux through the infinite surface placed at a distance d from each charge, perpendicular to the line on which the point charge
If destructive interference occurs at a particular instant, by what minimum amount must the difference of two path lengths in the U-shaped tube be increased in order to hear constructive interference? The speed of sound is 345 m/s.
The coefficient of kinetic friction between the block and the incline.
A 50.0 g copper calorimeter contains 250 g of water at 20.0°C. How much steam must be condensed into the water if the final temperature of the system is to reach 45.0°C?
A step-up transformer has 340 turns on its primary coil and 90,000 turns on its secondary coil. The EMF of the generator to which the primary circuit is attached is 55.0 V. What is the EMF in the secondary circuit?
The effect of high pressure on organisms, including humans, is studied to gain information about deep-sea diving and anaesthesia. A sample of air occupies 1 L at 25 0C and 1 atm. What pressure is needed to compress it to 100 cm3 at this temperatu
A 1500 kg cartravels at constant speed of 22m/s around a circular track which has a radius of 85m. What is the magnitude of the acceleration?
A firefighter of mass 69 kg slides down a vertical pole with an acceleration of 3 m/s2. The acceleration of gravity is 10 m/s2 . What is the friction force that acts on him?
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