A30 n crate is submerged in water. the amount of buoyant force acting on the crate is 25 n. what will the crate do? the crate will float and accelerate upwards. the only force acting on the crate is the buoyant force, and it acts upwards on the crate. the crate will sink and accelerate downwards. the buoyant force acting upwards on the crate is smaller than the downward force of gravity on the crate. the crate will sink and accelerate downwards. the buoyant force and the gravitational force are both acting downwards on the crate, making it accelerate down. the crate will sink and accelerate downwards. the only force acting on the crate is the buoyant force, and it acts downwards on the crate.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.