please help me with this questions thank you so much. 1. A wave completes 44.8 cycles in 11.9 seconds. Find its speed if its wavelengh is 7.77 x 10^3 m? 2. And object moving at 1.225m/s accelerates at 6.611m/s2 for 3.330s. Find work and power, if the object's mass is 55.5 kg? 3. A boulder with...

I have problems with the formula to use for this question: For a projectile hrown horizontally at 50 km/h, calculate the velocities in the vertical direction at 1.0s, 2.0s and 3.0s. I am pretty sure that distance needs to be found.. but if I could get a step by step answer it would really...

This is a pretty good question and I have no clue for the answer, can someone help?:confused: According to newtons third law , when a horse pulls on a cart, the cart pulls back with an equal force on the horse. If, in fact, the cart pulls back on the horse as the horse pulls forward on the...

Hello everyone, I am currently taking grade 11 U physics. We are doing a lab (Refraction and Critical Angles) and I have no clue what two questions are asking for!! I just need help understanding the question!!!! Here are the questions: 1) Compare the Ѳc (theta) found experimentally against...

A cave explorer drops a pebble into a cavern to find how far down it is to the water. The stone is heard hitting the water 1.8 s after release. If the speed of sound in the air in the cave is 345 m/s, how deep is the cavern? The answer is 15 m. How do you get this number using d=4.9(t)^2 and...