What element has 31 protons and 37 neutrons?

A scientific blank is a proposed explanation that can be tested

Light is shown through air on a diamond (n=2.42) and it partially reflects and refracts. Based on the incident angle of 62.5 shown, what is the angle of reflection of the light? Question 10 options: a) 62.5 b) 21.5 c) 27.5 d) 84.0

A 0.540-kg bucket rests on a scale. Into this bucket you pour sand at the constant rate of 56.0 g/s. If the sand lands in the bucket with a speed of 3.20 m/s, (a) what is the reading of the scale when there is 0.

An engine can pump 30000 litres of water to a vertical height of 45 m in 10 minutes. Calculate the work done by the machine and its power. (g=9.8m/s2, Density ofwater=1000 kg/m3,1000 litre=1 m3)

The gravitational force between two objects is 1600N. What will be the gravitational force between the objects of the distance between them doubles?

perature is 0◦F. How much taller is the building when the temperature is 107◦F? The linear expansion coefficient of steel is 1.1 * 10-5 (◦C) - 1.

A weightlifter lifted 800 Newtons to a height of 2.5 meters. What is the power output if this was done in 1.22 seconds?

What conditions must be present for a translational and rotational equilibrium of a rigid body?

In objects motion will not change is the force is acting on the object are blank

How fast or slow an object is moving and in what direction