Which of the following examples describes an increase in potential energy?
a.
a...
Physics, 05.02.2020 00:02 SamanthaBees
Which of the following examples describes an increase in potential energy?
a.
a bicycle going down a hill
b.
a basketball falling through a net
c.
a rollercoaster moving down the track
d.
a paint can being carried up a ladder
Answers: 1
Physics, 22.06.2019 07:50
The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.
Answers: 2
Physics, 22.06.2019 10:30
The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.
Answers: 1
Physics, 22.06.2019 17:30
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Physics, 22.06.2019 18:30
En un laboratorio, nakisha mezcla una solución de hidróxido de sodio con un indicador llamado fenolftaleÃna. cuando se combinan, crean una solución de color rosa. nakisha se pregunta si la mezcla de otras soluciones con fenolftaleÃna también creará este color rosa. ? cómo podrÃa nakisha utilizar el proceso de investigación cientÃfica para determinar si la mezcla de otras soluciones con fenolftaleÃna también creará un color rosa? marque las que correspondan.
Answers: 2
Mathematics, 02.06.2021 21:30
Mathematics, 02.06.2021 21:30
Biology, 02.06.2021 21:30
History, 02.06.2021 21:30
Mathematics, 02.06.2021 21:30
Mathematics, 02.06.2021 21:30
Mathematics, 02.06.2021 21:30