A meter stick is balanced at the 50 cm mark. You tie 70 N weight at the 30 cm mark. What weight at the 90 cm mark would create a rotational equilibrium?

How is the resistor of a 40v lamp higher then the resistor of a 60v lamp?

The floor of the room is cooler than the ceiling. explain this based on air currents in the room.

1. What does it mean when gravity is called an "attractive force"?

Chet plans an experimental investigation to see how well a new fertilizer works on daisies. The fertilizer must be dissolved in water and delivered to the plants by spraying it onto the leaves and stems.

Three observers watch a train pull away from a station toward the right of the platform. Observer A is in one of the train's cars; Observer B is on the station platform;

A boulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (A) what's the initial speed of the Boulder? (B) determine the acceleration due to gravity on mongo. Ignore friction.

The half-life of carbon-14 is 5730 years. How long will it take for the number of carbon-14 nuclei in a sample to drop to a quarter of the original number? Enter your answer as a number years

Which object has more thermal energy a bowl of soup or pot of soup

When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by? A. diffraction B. dispersion C. refraction D. reflection,

How long would it take to drive to alpha centauri (4.4 light-years away) ?