1. A 12 kg barrel is pulled up by a rope. The barrel accelerates at 1.2 m/s2. Find the force exerted by the rope. Show all your work.

Assume you are looking at a Periodic Table that is NOT color coded. a. Describe where to look on the Periodic Table to find elements which have similar chemical properties. b. Explain why they have similar properties. c.

A rock is thrown off a cliff at an angle of 57° above the horizontal. the cliff is 135 m high. the initial speed of the rock is 24 m/s. (assume the height of the thrower is negligible.

It takes 300 N to move a box 10 meters in 10 seconds. How much power is required? O A. 100 W O B. 3,000 J C. 30,000 W O D. 300 W

Which of the following statements are not true about gravity? Check all that apply. A. Gravity exists in the whole universe. B. Gravity exists between two objects that have mass. C. Gravity exists only on Earth. D.

What is the equation to speed

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.