The grid in a triode is kept negatively charged to prevent… a. the variations in voltage from getting too large. b. the electrons from being attracted to the grid instead of the anode. c. electrons being repelled back to the cathode. d. electrons from escaping from the tube containing the triode.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)