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Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. If your arm is 0.94 m long (from shoulder to fist) and the distance from the handle to the surface of the water is 21.5 cm, what minimum speed is required?
A 6.0 V battery is connected to a wire made of three segments of different metals connected one after another, Find the potential difference across tungsten wire
A telescope has an objective with a refractive power of 1.35 diopters, What is the angular magnification of the telescope
Plane monochromatic waves with wavelength 520 nm are incident normally on a plane transmission grating having 350 slits/mm
You drop a 12-g ball from a height of 1.5 m and it only bounces back to a height of 0.81m. What was the total impulse on the ball when it hit the floor
An engine performs 4000 joules of work in 10 seconds. What is the power output in kilowatts and in horsepower
A string length 2.0 m and linear mass density 25.0 mg/m vibrates at a fundamental frequency of 450.0 Hz. What is the speed of the transverse strin waves
A particle moves along the curve y=cos(x) from x=0 to x=?/2 under the action of the force F=(3xN)i+(4yN)j. Determine the work done by the force on the particle
A 20kg suitcase is being pulled with constant speed by a handle that is at an angle of 22degrees above the horizontal. what is the force F applied to the handle
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. determine the work function of potassium
A horizontal force of magnitude 41.5 N pushes a block of mass 4.23 kg across a floor where the coefficient of kinetic friction is 0.571. What is the increase in the kinetic energy of the block
Suppose you consume 2000 Cal of food per day. Note that a food Calorie, with capital C, is one kilocalorie: 1 Cal = 1 kcal. How many watts of heat and work can you do
q1. in accordance to one estimate the first atomic bomb released an energy equivalent to 20 kilotons of tnt. if 1 ton
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