Very dense * powerful gravitational field * extremely compact space object * spectroscope data reveal swirling gas observations by a group of astronomers were compiled. the astronomers were describing a they had discovered. a) quasar b) black hole c) solar system d) distant galaxy

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?