What is the meaning of lightyear?

You throw a baseball straight upward. the drag force is proportional to v2. in terms of g, what is the y-component of the ball's acceleration when the ball's speed is half its terminal speed and (a) it is moving up? (b) it is moving back down?

Why have plants in the alpine biome adapted to survive on limited nutrients?

You calculate the density of a block of aluminum to be 2.68 g/cm3. You look up the density of a block of aluminum at room temperature and find it to be 2.70 g/cm3. This results in an error of 0.7%.

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors.

Which term describes the upward push of a fluid on an object in the fluid? A. Cohesive force B. Buoyant force C. Adhesive force D. Pressure

What's the net force acting on an 18-kg object if an acceleration of 3.0 m/s2 is produced?

What type of force slows you down as you slide across the floor? A. Strong nuclear force B. Friction C. Magnetic force D. Gravity

Scenario A: A ramp is used to lift a refrigerator a height of 12 m with a force of 110 N. The ramp is at an angle of 50° to the ground. Scenario B: A ramp is used to lift a refrigerator a height of 13 m with a force of 120 N.

The sun is 30 degrees above the horizon. it makes a 51 m long shadow of a tall tree. part a how high is the tree?

What can destroy stuff yet does not have any mass