How do we determine the amount of dark matter in elliptical galaxies?

alex goes shopping. he buys 2 hats that hat cost the same price and a scarfthat cost $17. total he spent $35. how much did each hat cost

The very best atmospheric conditions on earth result in an angular resolution limit of about 0.4 arcseconds if an astronomy observes under such conditions at visible wavelengths using a 0.

If an object has 180 J of PE and a mass of. 5kg, what is its height?

Why does a light bike have more kinetic energy

Technician A says that the rotary engine is not an internal combustion engine, because it does not use pistons. Technician B says that a rotary engine gets three power pulses for each rotation of the engine. Who is correct?

What will occur if the steepness of an inclined plane is decreased?

A 12,000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with incompressible oil with a density of 800 kg/m3 and capped at both ends with tight-fitting pistons.

The standard metric units of measurements for electric field strength are?

What steps are involved in converting potential energy to kinetic energy, or kinetic energy to potential energy?

A 50 Newton box is moved a distance of 12 meters. How much work was done on the box?