In which situation is the speed of the car constant while its velocity is changing? The car travels down a straight track at 30 m/sec.
The car travels around a circular track at 30 m/s.
The car begins from rest and accelerates to 20 m/s.
The car begins traveling at 30 m/s and decreases to 15 m/s.

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4