Answer:
All these statement are true
Explanation:
Gravity will be acting like a centripetal force for the circular motion of object around earth, which makes it perpendicular to the velocity vector. In the case of elliptical motion, gravity can still be divided into 2 vectors, one parallel and the other perpendicular to the velocity. At the nearest point in elliptical motion, gravity is directly perpendicular to velocity just like in circular motion. At the farthest point, the potential energy is minimized and has been converted into kinetic energy. Therefore at this point the speed is greatest.
Answer:
F = 1908 N
Explanation:
GIVEN,
Incident water stream has a velocity = U = +18.0 m/s,
Exiting water stream has a velocity = V = -18.0 m/s.
Mass of water per sec : M / t = 53 kg /s
Change in velocity d v =18 m / s – ( -18 m / s)
= 36 m / s
Magnitude of the average force exerted on the water by the blade
F = ( M / t ) x dv
=( 53 kg /s ) x ( 36 m/s )
F = 1908 N
Answer:In this lesson, the mathematical relationship between the tube's length, the speed of sound through air, and the ... Thus, the length of the air column is equal to one-half of the wavelength for the first harmonic. ... Determine the fundamental frequency (1st harmonic) of an open-end air column that has a length of 67.5 cm.
Explanation:
I believe it would be 3 amps.
E= electric field
E=F/q= force per unit charge
q= charge
