I WILL GIVE BRAINLIEST Identify two types of motion where an object's speed remains the same while it continues to change direction

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.