A 1.0kg ball swings in non-uniform motion in a vertical circle on the end of a 90cm long string. The tension in the string is 20N when its angle from the highest point in the circle is θ=30. What is the angle the ball's acceleration vector makes with the horizontal?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

In a series circuit the __ is the same at every point