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You invented an air capacitor. Its parallel plates are separated by 2.00 mm. Each plate carries a charge of 5.50 nC. The magnitude of the electric field of the plates is 5.50 x 105 V/m. Find the capacitance of your invented air capacitor.
You bought a parallel plate capacitor for the flash of your developed camera. It consists of two rectangular plates, each with area of 4.5 cm2, that are separated by a 2.00-mm thick ordinary glass. You then connected it with a 12.0 V battery. How much energy is stored in the capacitor?
How long must a train undergo constant acceleration in order to go from 35 km/h east to 45 km/h west ending up 250 mm west of its original position ?
A pile of mass 50kg is being driven into the ground by a hammer of mass 400kg. If the hammer is dropped through a height of 3.5m, there is no obersaable rebound, and the average resistive force of the ground on the pile is 50kN, calculate the distance the pile sinks into the ground
A body of 4kg mass travelling at 8m/s² collides with a stationary body of mass 12kg, both being constrainted in their motion by the same frictionless guides. Find their velocities and loss of kinetic energy, if coefficient of restitution is 1 and (b) if it is 0.5
A cyclist of mass 2kg is riding his 13kg bicycle up a 1 in 10 incline. What power does he need to develop in order to maintain a constant speed of 24kph
a) 0.056m³ of air at 1.38 bar are compressed isothermally to a volume of 0.014m³.
Determine the work energy required for the compression.
b) compare this to the work energy which would be required for an adibatic compression through the same volume ratio. For air R= 0.287KN and ➰ = 1.4
Calculate the work done by 2.4N force pushing a 400.g sandwich across a table 0.75m wide
a 10kg mass is suspended from the end of a spring and released. If the spring oscillates in shm with a period of 0.5s Cal the energy given to the 10kg Mass if the amplitude of oxidation is 2cm?
A force of 9n acts along the positive x axis and a force of 4n acts in direction making an angle of 60⁰ with the positive direction of the x axis. What is the sum of the resolved forces along the x axis ?
