2 pts Ally, Brittany, Christine, and Danica are exercising on the track field. Their masses are
55 kg, 60 kg, 50 kg, and 55 kg, respectively. Ally and Christine are walking around the
track together at the same speed. Danica is running around the track, and Brittany has
stopped to tie her shoe. Rank the girls from least to greatest momentum.

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .