If the load on Pulley E is 20N, how much effort is needed to life it?

The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130 J of heat. As it expands, it does 79 kJ of work.

Why is fusion an appealing energy source? Fusion products are generally not radioactive. Extremely high temperatures are required. The reaction can be confined by available structural materials. Extremely high pressures are required.

how many revolutions are completed by a top spinning with a constant angular velocity of 3pi radians during a 20 sec time interval

If the mass of one of two objects is increased, the force of attraction between them will 1 - decrease 2 - increase 3 - remain the same

What makes up the biosphere?

Juan is interested in finding out whether hummingbirds are attracted to some flowers more than others. In what order should Juan perform the steps of his experiment?

Will make Brainlest! <3 Metals are considered to be good conductors of heat. How do the specific heat values indicate this?

Which example identifies a change in motion that produces acceleration? choices are: 1. a speed skater moving at a constant speed on a straight track 2. a ball moving at a constant speed around a circular track 3.

Which of the following diagnostic procedures uses ultrasound?

Why is it easier to read black text on a white background than to read green text of any light color?