An element's atomic number is 92. How many protons would an atom of this element have?

Is calcium atom an acid or base?

When a ray of light passes at an angle to the normal from one material into another material in which its speed is higher?

In this lab you will determine the initial mass of a candle. You will burn the candle and find the mass of the candle after it burns. Record your best "educated guess" about what will happen with the mass of the candle.

In which situation is the acceleration of the car negative?

What does the 2 mean in the formula 5Mg3 (PO4) 2?

Why does icing sugar dissolve more rapidly than granular sugar?

At t = 0 the components of a radio-controlled car's velocity are vx = 0.5 m/s and vy = 1.2 m/s. Find the components of the car's velocity at t = 4.

2) A window washer pulls themselves upward using a bucket pulley apparatus. A) How hard must pull downward to raise herself slowly at a constant speed? B) If she increases this force by 15%, what will her acceleration be?

A star with an original mass of 8 to 25 solar masses will ultimately become a? a) red giant b) white dwarf c) neutron star d) main sequence star

Racewalking involves more impact than running. true false