Galileo used a telescope to observe the phases of the Sun
a. True
b. False
Indicate whether the statement is true or false
False
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Two charged bodies separated by a distance d exert an electrical force on each other. The distance d is doubled. The electrical force on each body now
a. decreases by 1/4. b. decreases by 1/2. c. stays the same. d. increases by 2 times. e. increases by 4 times.
A juggler throws two balls up to the same height so that they pass each other halfway up when A is rising and B is descending. Ignore air resistance and buoyant forces. Which statement is true of the two balls at that point?
a. There is an residual upward force from the hand on each ball. b. There is a greater residual force from the hand on A than there is on B. c. Only gravity acts on B but there is an additional residual force from the hand on A. d. There is an additional downwards force besides gravity on each ball. e. The only force acting on each ball is the gravitational force.
The position of a particle as it moves along the x axis is given for t> 0 by x = (t3? 3t2 + 6t) m, where t is in s. Where is the particle when it achieves its minimum speed (after t = 0)?
A. 3 m B. 4 m C. 8 m D. 2 m E. 7 m
Fossil fuels are what they are, the amount of effluent cannot be changed in any way
What will be an ideal response?