3. A carpenter uses a crowbar to remove the top of a box. The top has a resistance of 500 N. The

carpenter applies an input force of 250 N. What is the mechanical advantage of the crowbar?

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If 1=5 2=10 3=15 4=20 what does 5 equal?

How does under water welding work?

Which of the following correctly identifies the relationship between work, force, and distance? A. W = d/F B. W = F x d C. W = F + d D. D = W x F

Gerry and Lena work in a modern physics laboratory and study nanotechnology, which is a new type of technology that allows control over individual particles as small as molecules or atoms.

9 volt battery is connected to three 20 Ohm resistors in series. What is the total resistance of the load and current through each?

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.