A 50g mass of metal (c=0.20 cal/g°C) at 90°c is dropped into water at 30°c and the temperatures stabilized at 40°c.

100g

50g

2.0g

70g

What is the electrical charge on the nucleus of a boron atom?

4. Assume a multiple level queue system with a variable time quantum per queue, and that the incoming job needs 50ms to run to completion.

A horizontal line on the velocity vs. time graph indicates a constant, positive acceleration A. True B. False

This is how platinum appears in the periodic table. Rounded to the nearest whole number, what is the atomic mass of platinum? a. 78 b. 117 c. 195 d. 273

Environmental Science A dependent variable is a. directly changed by the experimenter. b. manipulated by changes to the independent variable. c. a variable that is kept constant. d. a variable that is used as a control.

Since you've determined that the power supply is a 700W dual rail, what does that make the maximum output power?

A 2 m length of an aluminum pipe of 240 mm outer diameter and 10 mm wall thickness is used as a short column to carry a 640? centric axial load. Knowing that? = 73? P? and? = 0.

A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received intensity of thermal radiation is greater than 0.60 W/m2. Your body emits a good deal of thermal radiation.

A planet has a mass of about 6.4 x 1023 kg, and its moon has a mass of about 9.6 x 1015 kg. if the magnitude of the gravitational force between the two bodies is 4.6 x 1015 n, how far apart are the planet and its moon? a. 9.4 x 106 c. 4.6 x 109 b. 2.

Is burning a nonrenewable natural gas a chemical change