Astudent wanted to know what would happen in the swinger experiment if he changed the way he made the pendulum. instead of using string he used fishing line to make his pendulum the standard 38 cm long. he used a washer at the end for the pendulum bob. then he counted how many times his pendulum swung back and forth in 15 seconds. do you think he has done a good job of controlling the variables?

Why is the use of carbon-14 limited

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.