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A platinum sphere with radius 0.0181 m is totally immersed in mercury. Find the weight of the sphere, the buoyant force acting on the sphere, and the sphere's apparent weight. The densities of platinum and mercury are 2.14 × 104 kg/m3 and 1.36 × 104 kg/m3, respectively.
a duck and a guy named john are sitting on opposite sides of a large merry go round that is rotating clockwise. Describe the motion of the coconut viewed by the students
Assume 0.360 kilogram of water initially at 35.0oC is poured into a 0.300 kilogram glass beaker having a temperature of 25.0oC. Find the final equilibrium temperature of the system
The length of a simple pendulum is 0.86 m and the mass of the particle (the "bob") at the end of the cable is 0.33 kg. The pendulum is pulled away from its equilibrium position by an angle of 9.0 ° and released from rest.
If a rubber ball of mass 1.0 kg is dropped from a height of 2.0 m and rebounds on the first bounce to 0.75 of the height from which it was dropped, how much energy is dissipated through the collision with the floor?
question1a curve of radius 160 m is banked at an angle of 11deg. an 808-kg car negotiates the curve at 88 kmh without
question a proton has a velocity of 1.25 x 106 ms. it travels into a magnetic field that has a strength of 1.5 t. what
On a certain evening, the dew point is 14 degree C and the relative humidity is 50%. How many Celsius degrees must the temperature fall
A petroleum engineer has a tank with 2.40mol of N2 gas at 1.00 atm and 23.0?C. She first heats the gas at constant volume, adding 1.52 × 104 J of heat. Calculate the final temperature of the gas
You have a concave spherical mirror with radius of curvature equal to 50 cm. Where do you have to place an object so that its image wouldbe real and twice the size of the object? Will the image be upright orinverted?
A pulsar is a rapidly rotating neutron star that emits a radio beam the way a lighthouse emits a light beam. We receive a radio pulse for each rotation of the star. The period T of rotation is found by measuring the time between pulses. The pulsar..
q1. a small turtle moves at a speed of 165 furlongs per fortnight. find out the speed of the turtle in centimeters per
A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 77 km/h. What is the car's centripetal acceleration in m/s2
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