There is a 30 g sample of be-11 it has a half life of about 14 seconds how much will be left after 28 seconds

Effects of Environmental Conditions on Transpiration Environmental Condition Water Loss (mL/m^2/hr) Standard room 4 Bright light 6 Wind 8 Misting around plant 2 Polluted environment 3 Which of the conditions serves as the control?

True or false? Radiant energy is generated by a petunia on Tuesday.

Describe briefly how fossil fuels were formed

James is driving north, at 100km/hour. He uses cruise contrast speed, and the road is straight. What is his rate of acceleration?

A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, what is the new pressure of the gas? (Assume that there's no change in volume.

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.

Give an example of each simple machine