A driver notices an upcoming speed limit change from 45 mi/h (20 m/s) to 25 mi/h (11 m/s). If she estimates

the speed limit will change in 50 m, what acceleration is needed to reach the new speed limit before it begins?

The following is an example of a physical or a chemical change? Alex made a beautiful origami swan out of a blue sheet of paper which she colored red.

To compress spring 1 by 0.20m takes 150j of work. stretching spring by 2 by 0.30 m requires 210j of work. which spring is stiffer?

A 2,500 kg car traveling to the north is slowed down uniformly from 20.0 m/s by a 6,250 N braking force acting opposite the car's motion. a) What is the cars velocity after 2.50 s? b) How far does the car move during 2.

A chart labeled table A : effect of height on temperature with initial temperature as 25 degrees Celsius, mass w is 1.0 kilograms and mass c is 5.0 kilograms. The chart is 5 columns and 5 rows.

The pressure in the liquids decreases with depth. true or false

The force generated by a single muscle fiber can be increased by increasing is called

Write an expression that results in a String consisting of the third through tenth characters of the String s.

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.

The correctly balanced equation for H202 - H2O + O, is A) H202 - 2H2O + O2 B) H302 - H20+20, C) 2H, 02 - - 4H20 + 0, D) 2H, 02 - 2H30 + 0,