Find what minimum power must be supplied to the coils

Assignment Help Physics

Reference no: EM13655890

A concrete slab is 10.9 cm thick and has an area of 5.1 m2. Electric heating coils are installed under the slab to melt the ice on the ground in the winter months. Find what minimum power must be supplied to the coils to maintain a temperature difference of 20.0°C between the bottom of the slab and its surface? Assume all the energy lost is through the slab.

W

Reference no: EM13655890

Questions Cloud

Find the speed of all carts after the collision : A 2 kg cart has a spring with K = 5000 N/m attached to its front, parallel to the ground. This cart rolls at 4m/s toward a stationary1 kg cart. Find the speed of all carts after the collision

Find the actual depth at which the fish is swimming : A grizzly bear is sitting on a rock in the middle of a calm river when she observes a fish directly below. Find the actual depth at which the fish is swimming

Find the angular acceleration of the pebble : A cyclist travelling at 5.0 m/s uniformly accelerates up to 10 m/s in 2.0s. Find the angular acceleration of the pebble through those 2 seconds

Determine what must be the length of the aluminum rod : An aluminum rod and a copper rod of equal diameter are joined end to end in good thermal contact. Determine what must be the length of the aluminum rod

Find what minimum power must be supplied to the coils : A concrete slab is 10.9 cm thick and has an area of 5.1 m2. Find what minimum power must be supplied to the coils to maintain a temperature difference of 20.0°C between the bottom of the slab and its surface

Find how much energy is lost during the window in one day : A glass window pane in a home is 0.62 cm thick and has dimensions of1.0 m 1.9 m. Find how much energy is lost during the window in one day, assuming the temperatures outside and inside remain fix

Find the frequency if the tension is reduced : When a banjo string is under a tension of 200N it is tuned to a frequency of 523 Hz. find the frequency if the tension is reduced to 196N

Find what is the spacing between slits of the grating : A helium-neon laser (λ=632.8 nm) illuminates a diffraction grating. Find the spacing between slits of the grating

Obtain the critical angle for the liquid : A beam of light is incident from air on the ground of a liquid. Estimate the critical angle for the liquid when surrounded by air

User Account

All Pages