About how hot does something have to get to glow red hot?
a. 375 degrees F c. 3000 K
b. 800 degrees F d. 6000 K
B
You might also like to view...
Why are there no small craters on the surface of Venus? a. The thick atmosphere protects the surface from small meteorites
b. Old surfaces have been subducted by convection currents. c. Venus formed after the heavy bombardment period. d. Weathering and erosion removed all craters. e. Shield volcanoes prevent small craters to remain on exist on the surface.
A sled is moving along a horizontal surface with a speed of 5.7 m/s. It then slides up a rough hill having a slope of 11° above the horizontal. The coefficient of kinetic friction between the sled and the surface of the hill is 0.26
How far along the surface does the block travel up the incline?
The potential difference between the terminals of a battery, when no current flows to an external circuit, is referred to as the
A) emf. B) terminal voltage.
A proton is accelerated from rest through a potential difference of 150 V. It then enters a region of uniform magnetic field and moves in a circular path (radius = 12 cm). What is the magnitude of the magnetic field in this region?
a. 18 mT b. 12 mT c. 15 mT d. 22 mT e. 10 mT