Assuming the ball's initial velocity was 51 ∘ above the horizontal and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit at a point 0.9 m (3.0 ft) above ground level? assume that the ground was perfectly flat. express your answer using two significant figures.
Answers: 1
Physics, 22.06.2019 03:30, itsRyanPlayzMC9660
Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.
Answers: 1
Physics, 22.06.2019 18:50, jtsizemore
An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
Answers: 2
Physics, 23.06.2019 02:40, jarteria0
Check the following equation for dimensional homogeneity: ⅆ mv=∫t1t2(fcosθ)ⅆt where m is mass, v is velocity, f is force, θ is an angle, and t is time. check that each term in the equation has the following dimensions: [malbec] where you are to choose the coefficients a, b, c.
Answers: 2
Assuming the ball's initial velocity was 51 ∘ above the horizontal and ignoring air resistance, what...
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