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In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 12.0C.
Given: 1. An electric current of 200A is passed through a stainless steel wire having a radius 0.001268m.
The 60-kg rod OA is released from rest when theta = 0 degree. Determine its angular velocity when theta = 45 degree.
A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 5.0mm thick. Both have the same area.
The transfer of heat from the body's interior to the surface is achieved primarily through the flow of blood.
What property makes a given material a good conductor? What property makes a given material a good insulator?
Find a water bill and work out how much water you use in a year and compare this to the amount of water in a foot-acre.
There is a device which works as heat of pump. This device is able to heat the air at 1 degree per second. The velocity of hot air is 0.5 m/sec
Moves from the origin to the point (0,b), and then goes from (0,b) until (a,b) parallel to the x-axis.
The temperature of a gas stream is measured by a thermocouple whose junction can be approximated as a 1.2mm diameter sphere.
A 90kg box is pushed by a horizontal force F at constant speed up a ramp inclined at 28 degrees. Determine magnitude of applied force
To cause a 25 kg object to experience an acceleration of 2 m/s2 the net force that needs to be applied to the object is
Assume that the body of an airplane is considered as a 20-m long hollow cylindrical structure made up of unknown composite material
A 2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown.
The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, kA = 20 W/m?K and kC = 50 W/m.K
Explain how power is created using hydraulics and how a little cylinder on the tractor can raise or lower extreme amounts of implement weight.
Which requires more work? Lifting a 10 kg load a vertical distance of 2 meters or lifting a 5 kg load a distance of 4 meters?
A hot plate with an insulated back is considered. The rate of heat loss by natural convection is to be determined.
Describe various types of mechanical energy compared to kinetic energy and potential energy and inter relation between them.
Consider (unrealistically) a perfectly spherical rotating planet whose g value is constant over the surface. A bead lies on a frictionless wire that lies.
The ball has a weight of 15 lb and is fixed to a rod having a negligible mass. If it is released from rest when theta = 0 deg.
Hot engine oil flows over a flat plate. The total drag force and rate of heat transfer per unit width of the plate are to be determined.
The largest caliber aircraft gun operated by German Air Force in WW2 was the 12.8cm flak 40. The weapon fired a 25.8kg shell with a muzzle speed of 880m/s.
A ball of mass 0.145kg is kicked by a soccer player. If the player's foot is in contact with the ball for 0.01sec and gives it a speed of 40m/sec.
You (m=80.0 kg) are in a rowboat (m=40.0 kg) of volume 0.300 m3. To answer the following, use the density of seawater as 10,050 N/m3.