When to objects stick together the mass of the combined object is equal to the

According to Ptolemy's model of the movement of celestial bodies, A. the earth rotates around the sun. B. the sun is the center of the universe. C. the earth rotates around the moon. D. planets orbit in circular paths around the earth.

Mandy is testing an unknown solution to determine whether it is an acid or a base. She places a piece of red litmus paper into the solution and the paper turns blue. What is her unknown solution?

A series circuit is composed of two resistors: R1=7 R2=11 if a 24-volt battery is connected across R1 and R2 in series, Find the circuit current. amps 430 1.3 5.6 0.75

When is an element neutral?

Which is the largest and most dense of the terrestrial planets? A. Mercury B. Venus C. Earth D. Mars

Power=170 watts time=20 seconds

What is the charge of alpha, beta and gamma rays?

A pair of scissors is a complex machine. what simple machines make up a pair of scissors?

Methane gas absorbs red light, and methane clouds reflect blue light, giving Uranus and Neptune their distinctive blue colors. Why do Uranus and Neptune have methane clouds, but Jupiter and Saturn do not

A car traveled 1025 kilometers from El Paso to Dallas in 13.5 hours. What was it's average velocity?