A ball is thrown upward in the air, and its height above the ground after t seconds is H (t) = 57 t - 16 t 2 feet. Find the time t when the ball will be traveling upward at 14.25 feet per second.

Does the thickness of the wire affect the strength of an electroscope

Which changes would result in a decrease in the gravitational force between two objects? Check all that apply.

Galaxy A is located 200 million light-years from Earth, while galaxy B is located 600 million light-years from Earth. According to the Hubble law, how does the motion of the two galaxies compare? A.

Which characteristics are common to amphibians, lemurs, and humans? vertebrae, tetrapod, hair amniotic egg, hair, biped tetrapod, vertebrae tetrapod, hair

Which of the following devices is made of two different metals and produces a voltage when the metals are exposed to heat? A. An accelerometer B. A photovoltaic cell C. A crystal D. A thermocouple

Show your conversions on the right 8500 mm 2. 250 mg 3. 500000 g 4. 201 = 5. 0.5 Km 6. 350 mm

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above

Which phrases describe organisms that formed index fossils

What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation would most likely be conducted to answer the following question?

A machine has an efficiency of 80%. How much work must be done on the machine so to make it do 50,000 J of output work?