1.) Which choice is an example of a consumer?

A.) sun

B.) fungi

C.) bee

D.) tree

Suggest one way to detect the oxygen level in a safer way. give one reason for your suggestion.

A plasticine ball being dropped onto a metal block. The plasticine ball changes its shape after the impact. 1) Name the force involved during the impact. 2) Explain why the plasticine ball changes its shape after the impact

This is a force that acts over a distance, can not be seen, and causes like poles to repel and opposite poles to attract. What is this force? A) gravity B) friction C) magnetism D) air resistenace

An electron is accelerated from rest by a potential differ - ence of 350 V. It then enters a uniform magnetic field of magni - tude 200 mT with its velocity perpendicular to the field.

An empty truck traveling at 10 km/h has kinetic energy. How much kinetic energy does it have when loaded so that its mass and its speed are both doubled?

After going for a jog, Sean made himself a glass of ice water. He drank the water and then left the glass containing the ice on the counter. An hour later, he noticed that the ice had melted.

Can a machine be more than 100% efficient? yes no impossible to determine

A 290-kg flatcar 25 m long is moving with a speed of 7.0 m/s along horizontal frictionless rails. A 80-kg worker starts walking from one end of the car to the other in the direction of motion, with speed 3.0 m/s with respect to the car.

The electric field across the plates of a capacitor will decrease if the plate separation ___ and the potential is not changed. decreases increases

A crystalline substance that contains water