Se o Universo tem uma idade definida, de aproximadamente 13,7 bilhões de anos, o que existiu antes do big-bang?

Military specifications often call for electronic devices to be able to withstand accelerations of 10 g.

What is the difference between volume and pitch

Once a well has reached the water table, it will not run dry true or false? - earth science

If the atmospheric pressure at 30.0 km is 28.0 torr and the temperature is - 39.0 °c, what is the volume of the balloon when it bursts?

Which of the following is/are true about the size of stars? Select all that apply. One solar mass is equal to the mas of the Sun Most stars are smaller than the Sun Most starts are larger than the Sun The Sun is smaller than average There are some

The vapor pressure of ethanol at 25 degrees C is 7.83 kPa. Calculate the vapor pressure in atm. Round answer to 3 significant digits.

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.

What is the concentration of H + ions at a pH = 7?

Suppose that Paul D. Trigger fires a bullet from a gun. Will the speed of the bullet leaving the muzzle will be the same as the speed of the recoiling gun? Explain.

A certain rock contains large jagged pieces of other rocks cemented by fine particles what type of rock is this explain