Which trial’s cart has the greatest momentum at the bottom of the ramp?

trial 1, because this trial has the greatest velocity
trial 2, because this trial has the greatest ramp height
trial 3, because this trial has a large mass and a large velocity
trial 4, because this trial has the greatest mass

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above

What is the relationship between wavelength of light and the quantity of energy per photon?

Given the data calculated in parts a, b, c, and d, determine the initial rate for a reaction that starts with 0.85 m of reagent a and 0.70 m of reagents b and c?