a ball at rest falls from a platform above the ground. the ball falls freely and hits the ground 1.1 s later. what is the platform

Which electromagnetic wave has the shortest wavelength? (A. Radio waves b. X-rays c. infrared rays or d. Visible light)

Evidence from sources used in research a. should be easy for the researcher to understand. b. should be credited by citing the source. c. should always be enclosed in quotation marks. d. should be short so as not to distract the reader.

The driver of a car slams on the brakes, causing the car to slow down at a rate of 26ft/s2 as the car skids 256ft to a stop. How long does the car take to stop? What was the car's initial speed? ft/s 4

Which is an element? Select one: a. salt b. carbon dioxide c. salt water d. carbon

16' wide and 44' long. If a piece of plywood has 32 sq. ft., how many pieces of plywood does the customer need to cover the floor?

In the formula for specific heat, which quantity is measured in units of J/g•°C? a - c b - Q c - T d - m

The acceleration of an object is proportional to which of the following? the mass the energy of the object the inverse of the mass the inverse of the force applied

Suppose you squeeze a sponge into a small ball. does the mass of the sponge change? Does it's density change?

A solid round bar with diameter of 2-in has a groove cut to a diameter of 1.8-in, with a groove radius of 0.1-in. the bar is not rotating.

If a pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25. N for 10 M. The handle she pulls on makes an angle of 36.5 degrees with the horizontal. How much work does she do over the ten meter distance?