How can hypotheses best be tested?

by asking questions

through experimentation

by forming an opinion

through technology

What is the potential energy of your 3kg puppy sitting in the grass in your backyard?

What does latitude measure

A 5kg ball is dropped from a height of 5m. Neglecting the effects of friction, what is the balls kinetic energy just before it hits the ground? A) 10 J B) 25 J C) 62.5 J D) 245 J

Determine the change in velocity of a car that starts at rest and has a final velocity of 20 m/s north

Doctors once believed that illness was caused by foul air and could not be transmitted from one person to another.

If you place 0◦C ice into 0◦C water in an insulated container, what will the net resultbe? Will there be less ice and more liquid water, or more ice and less liquid water, orwill the amounts stay the same? Explain.

At what speed would a car have to move in order to travel 20 kilometers in two hours?

Find the equivalent resistance Req between terminals a and b if terminals c and d are open and again if terminals c and d are shorted together. (Round the final answers to two decimal places.) With terminals c-d open, Req = Ω.

Which of these shows unbalanced forces at work on an object? A. an ice skater turning as he skates around an ice rink B. a bicycle chained to a bike rack at school C. a car driving at a constant 25 miles per hour on a straight street D.

A 4.25 kg block is sent up a ramp inclined at an angle theta=37.5° from the horizontal. It is given an initial velocity?0=15.0 m/s up the ramp. Between the block and the ramp, the coefficient of kinetic friction is? k=0.