You push against a steamer trunk with a force of 800 n at an angle alpha with the horizontal . the trunk is on a flat floor and the coefficient of static friction between the trunk and floor is 0.55. the mass of the trunk is 87 kg. what is the largest value of alpha that will allow you to move the trunk?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air