Redacteza o compunere in care sa prezinti o modalitate placuta de petrecere a vacantei de vara

Mechanical energy is the energy due to the _ and _ of an object. the choices are Size, volume, motions, surface area, density, and position.

A scientist performs an experiment on an unknown element. She finds that the element forms an ionic bond with beryllium (Be) but not with lithium (Li). She concludes that the unknown element must belong in group 2 of the periodic table.

The volume of a fixed mass of an ideal gas is doubled while the temperature is increased from 100 K to 400 K. What is the final pressure in terms of its initial pressure? a. 2 Pi b. 3 Pi c. 4 Pi d. 1/2 Pi

If the mass of an object is 100kg and the acceleration due to gravity is 9.8m/s^2 what is the weight of the object

Sound waves travel in air at 343 m/s. The lowest frequency one can hear is 25.0 Hz; the highest frequency is 25.0 kHz. Find the wavelength of sound for 25.0 Hz and 25.0 kHz

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450. milliliters?

Which type of sensor uses a burn-off circuit

Jack drops a tennis ball from the top of a skyscraper allowing it to fall freely. Neglecting air resistance, what is the velocity of the tennis ball at the end of 5 seconds? A.) 9.81m/s^2 B.) 49.0m/s^2 C.) 29.4m/s^2 D.) 88.7m/s^2

At one end of a production line, Isaac puts peaches into cans on a conveyor belt. He fills 18 cans per minute. As soon as Isaac has filled 670 cans on the conveyor belt, Albert starts putting lids on the cans at the other end of the production line.

Identify the triangular-shaped depositional feature indicated by letter c