List two forces that you can extert when riding a bicycle

Water is moving with a speed of 5.7 m/s through a pipe with a cross-sectional area of 4.8 cm2. The water gradually descends 9.2 m as the pipe increases to 8.8 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.

How are chargeable cells different from ordinary dry cells

Concepto de educacion fisica.

Which statement best describes energy and matter in a closed system? A. Energy and matter flow into and out of the system. B. Energy can flow into and out of the system but matter cannot. C. There is no energy in a closed system; there is matter. D.

Which would prove that the circles are similar? Dilate the smaller circle by a factor of. If the circles were not concentric, what additional step would be needed to prove they are similar? one of the circles so that the circles have the same center.

How could you make a sound wave have a lower pitch

Ice caps at the north and south poles are very reflective the ice reflects light and heat rather than absorbing it.

When you jump straight up as high as you can, what is the order of magnitude of the maximum recoil speed that you give to the Earth? Model the Earth as a perfectly solid object.

Consider the Sun and Earth as a single system. How does the law of conservation of energy apply to this system? A) The energy from the Sun that reaches Earth is destroyed by Earth.

Based on the law of conservation of energy, which statement is false Energy is lost when machines don't work right. We can't add more energy to the universe. We can't destroy energy that exists in the universe.