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A piece of iron of mass 200g at temperature 80 degrees C is added to a 300g of water at temp 10 degrees C. What is the final temperature of the system? [ The specific heat of water is 4190 J/(Kg . oC) and for iron is 450 J/(Kg . oC)]
What is the average pressure on the soles of the feet of a standing78.9-kg person due to the contact forcewith the floor? Each foot has a surface area of 0.022 m2.
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
The vehicle is released from rest with a restraining force T of 500 N n the control cable which passes around the drum and is secured at D. The wheels roll without slipping. Calculate the inertia of wheel A about its centre in kg.m^2
A powerful motorcycle can accelerate from rest to 25.8 m/s (58 mi/h) in only 2.90 s. How far does it travel in that time
A 9960 lb rocket is launched straight up, starting at rest. The thrust force pushing the rocket upward is 20000 lb. Air resistance exerts a force of 4000 lb (assumed constant). Think the point at which the rocket is 5.0 miles up.
light ray enters the atmosphere of the Earth and descends vertically to the surface a distance h = 92 km below. The index of refraction where the light enters the atmosphere is 1.00, and it increases linearly with distance to have the value n = 1...
The large mechanical tongs shown are used to grab and lift a thick 1500-lb steel slab HJ. Knowing that slipping does not occur between the tong grips and the slab at H and J, determine the components of all forces acting on member EFH.
an rl circuit with l 6.00 h and an rc circuit with c 4.00 microf have the same time constant. a if the two circuits
A certain raft is 2.5 m long, 0.55 m wide, and 14 cm deep. If the raft itself has a mass of 15.6 kg, what is the maximum mass it can support in fresh water
Hulk jumps a total distance of 102m and reaches a maximumheight of 52m, what was his initial velocity, both magnitude and direction
a piano has been pushed to the top of the ramp at the back of a moving van. the workers think it is safe but as they
On a circular path of radius 12 cm in air around a solenoid with increasing magnetic field, the emf is 26 volts. A wire with resistance 3 ohms is placed along the path. What is the current in the wire?
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