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A body has the weight 12 Newton in air and 10 Newton when it is immersed in fresh water with density 1000 kg/m^3. Calculate the volume of the body and density?
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
A thermos contains 140 cm3 of coffee at 85° C. To cool the coffee, you drop two 15-g ice cubes into the thermos. What is the final temperature of the coffee
A wire is 1.4 m long and 1.3 mm2 in cross-sectional area. It carries a current of 5.8 A, Calculate the conductivity of the material of which this wire is made
What is the volume of air at atmospheric pressure (100kPa) that must be pumped into a tyre that has a volume of 0.1 cubic meter?
A circular coil of 180 turns has aradius of 1.30 cm. (a) Calculate the current that results in a magnetic dipole moment of 2.30A·m2.(b) Find the maximum torque that the coil,carrying this current, can experience in a uniform 50.0 mT magnetic field
Two submarines are underwater and approaching each other head-on. Sub A has a speed of 17 m/s and sub B has a speed of 8 m/s. What is the frequency of the sound detected by sub B
A 73 kg canoeist standsi n the middle of her 22 kg canoe. Calculate the distance from the canoeist to the shore
A 5?, 10?, and 20? resistor are connected in parallel and the combination connected in parallel to a 20V battery with negligible resistance
A 1600kg car takes a 50-m-radius unbanked curve at 17m/s, What is the size of the friction force on the car
A particle of mass m1 = 3.57kg is traveling in the x-direction at a speed of v1 = 23.6m/s and collides with another particle of mass m2 = 2.85kg that is initially at rest. find the magnitude of the final velocity of the second particle
a frictionless pulley which can be modeled as a 0.80 solid cylinder with a 0.30 m radius has a rope going over it. The tension in the rope is 10 N on the right side and 12 N on the left side. What is the angular acceleration of the pulley.
Two long, parallel wires are separated by a distance of 2.8 cm. The force per unit length that each wire exerts on the other is 5 ×10-5 N/m. What is the current in the second wire
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