What is required for a rocket to lift off into space?

a. thrust that is greater than Earth's gravity

b. mass that is greater than Earth's

c. very little air resistance

d. more velocity than friction

A proton in a cyclotron is moving with a speed of 2.97*107 m/s in a circle of radius 0.568 m. 1.67 * 10-27 kg is the mass of the proton, and 1.60218 * 10-19 C is its fundamental charge.

Scrieti in caiete substantivele, adjectivele sau verbele apartinand familiei lexicale a urmatoarelor cuvinte din text : inima, aripa, piatra, umbra, nor, dragoste

Which of the following examples describes a situation where a car is experiencing a net force?

Did you detect a difference in the radiation levels between the intact smoke detector and the americium-241 removed from the smoke detector? if so why do you think the smoke detector is designed with that difference?

A balloon starts rising from rest from the ground with an acceleration of 1.25 m/s2. After 8s, a stone is released from the balloon. The stone will.

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glass-air interface at a 25.50∘ angle of incidence and refracts out into the air.

The locations of the major pressure and wind systems on the earth:

Which statements correctly describe the properties of heat? Select all that apply. Heat is an essential component of life on Earth. Heat is energy that flows from one object to another. Heat flows from a hotter object to a colder one.

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book? A.

When NASA's Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One of the largest fragments was a 1770-kg lead-lined film vault, and it landed with an estimated speed of 120 m/s.?