What type of interference occurs when a crest and trough join? a) Constructive Interference

b) Destructive Interference

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

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 .