A sphere of mass 40kg is attaracted by a second sphere of mass 15 kg when their centers are 20 cm apart with a force of 0.1mg-wt. Calculate the value of gravitational constant

A stone is tied to s string and whirled around in a circle at constant speed. Is the string more likely to break when the circle is horizontal or when it is vertical? Account for your answer, assuming the constant speed is the same.

Why does a gun recoil when a bullet is fired?

When monochromatic light is incident for a short period of time on a thin barrier having two slits, how will a screen placed in front of the slits appear?

In your own words, explain what the concept of density means-without using the formula.

An object with a mass of 5kg is moving with an initial velocity of 20m/s. the object accelerates at a rate of 15m/s/s for 8s. what is the net force on the ball during acceleration?

What type of plate boundary would be found along the coast line near Japan's volcanic mountain ranges

When the current in a toroidal solenoid is changing at a rate of 0.0270 A/s, the magnitude of the induced emf is 12.5 mV. When the current equals 1.30 A, the average flux through each turn of the solenoid is 0.00245 Wb.

A spring tide can occur at what day and month?

For a given launch velocity, at which launch angle does the projectile undergo the maximum horizontal displacement

Electric force is blank proportional to the amount of charge and blank proportional to the square of the distance between the charges