Shawn and his bike have a total mass of
52.3 kg. shawn rides his bike 1.6 km in
17.4 min...
Physics, 18.11.2019 06:31 cassidy32504
Shawn and his bike have a total mass of
52.3 kg. shawn rides his bike 1.6 km in
17.4 min at a constant velocity.
the acceleration of gravity is 9.8 m/s
2
.
what is shawn’s kinetic energy?
Answers: 2
Physics, 21.06.2019 21:30
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
Answers: 1
Physics, 22.06.2019 06:00
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒
Answers: 3
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 12:30
An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above
Answers: 3
Mathematics, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Biology, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Engineering, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Physics, 19.02.2021 21:50
Chemistry, 19.02.2021 21:50
Mathematics, 19.02.2021 21:50
Social Studies, 19.02.2021 21:50