subject
Physics, 02.09.2020 19:01 jujurocks10

A penny is dropped from the top of a tower. It hits the ground below after 2.5 s. How tall was the tower? A. 24,5m
B. 3.92m
C. 30.6m
D. 60m

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 17:30
Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element
Answers: 1
question
Physics, 22.06.2019 17:40
Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?
Answers: 1
question
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
question
Physics, 22.06.2019 21:40
Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
Answers: 1
You know the right answer?
A penny is dropped from the top of a tower. It hits the ground below after 2.5 s. How tall was the t...
Questions
question
Mathematics, 31.07.2019 18:00
Questions on the website: 13722362