What are 3 ways a machine serves its purpose?

A 150 kg cart is being accelerated by a tractor at a rate of 5 m/s². How much force is the tractor putting on the cart?

A battery establishes a voltage V on a parallel-plate capacitor. After the battery is disconnected, the distance between the plates is doubled without loss of charge.

Rank the gravitational forces exerted on the Earth by the following objects. (basketball, human being, skyscraper, car) largest to smallest force.

Why is money management important? how would you rate your own money management?

When energy from the Sun reaches the air above land, the air warms and rises. Along a coastline, cooler air above the ocean flows towards land to replace this rising air. What types of heat transfer are taking place during this process?

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.

Is an engine-activated booster unit that reduces the effort required to apply the hydraulic brakes

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg) ?

On a very hot summer day, the rooms on the first floor of a house stay cooler than the rooms on the second. Which form of thermal energy flow causes this to occur? A) Conduction B) Convection C) Kinetic D) Radiation

What is a ion in science?