So who am i? I mean reall who am i

How did we discover how to brake the sound barior and why did we not go as fast as the speed of light

A 50 gram bullet is fired through a 5 kg block of wood resting on a frictionless surface. The bullet has an initial speed of 500 m/s, while the block is initially at rest. After passing through the block, the bullet has a speed of 300 m/s.

Electrons in an x-ray tube are accelerated through 144 kV and directed toward a target to produce x-rays. Calculate the power of the electron beam in this tube if it has a current of 16.0 mA

2) If the initial velocity of an object is equal to a final velocity, what is the acceleration of the object?

Which element most likely has a shiny luster

Which profession is responsible for a planes design? A) Aerospace engineering B) Aerospace mechanic C) Pilot D) Flight attendant

Distracted driving laws have been put in place due to scientific studies that have shown the dangers associated with wireless technology. DDT. plastics. vaccines.

An electric circuit consists of a variable resistor connected to a source of constant potential difference. If the resistance of the resistor is doubled, the current through the resistor is (1) halved (3) quartered (2) doubled (4) quadrupled

If it takes 20n to move a box, how much power will be needed to move the box a diatance

What type of rock forms due to heating and cooling?