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he two balls in the figure above have an elastic collision.
Before the collision ball A was moving at 4.1 m s−1 and ball B was stationary. After the collision ball A is moving at 2.5 m s−1.
What is the speed of ball B after the collision? (in m s−1 to 2 s.f)
positive direction of an x axis. Beginning at time t ! 0, when
the bead passes through x ! 0 with speed 12 m/s, a constant force
acts on the bead. Figure 7-24 indicates the bead’s position at
these four times: t0 ! 0, t1 ! 1.0 s, t2 ! 2.0 s, and t3 ! 3.0 s. The
bead momentarily stops at t ! 3.0 s.What is the kinetic energy of
the bead at t ! 10 s?
I’m hooked on YouTube physics videos.
If E= MC2, how do you explain that since C2 is impossible,how does this make sense?
During testing, a formula 1 car of mass 750kg accelerates up a slope with inclination of 1 in 8. The car increases its velocity from (q) m/s to 48m/s and travels up the road a distance of (10g)m against a frictional resistance force of 1.0kN.
Using the Conservation of Energy principle, determine the following
parameters of the F1 racing car
a) The work done during the acceleration period
A simple pendulum consists of a 0.8-kg bob connected to a massless inextensible cord with a length L = 1.4 m. The bob is set into motion and its angular displacement is given by θ(t) = 0.11cos(ωt), where θ is in radians and t is in seconds. Take g = 9.8 m/s^2, determine the mechanical energy of this pendulum.
A musical note on a piano has a frequency of 40 Hz. If the tension in the 2-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
The area between two infinite flat parallel sheets which are placed 10mm away
from each other is occupied with a fluid having dynamic viscosity 0.5Pa.s.
Through this distance between the sheets a plate with small thickness and cross
sectional area 0.1m2
is being pulled. Considering the plate is at 4mm distance from
one of the sheets and the velocity distribution is linear determine the amount of
force which is needed to pull the plate.
Suppose a large rock is ejected from a volcano with a speed of 25m/s and at an angle of 35degree above the horizontal. If the rock strikes the side of the volcano at an altitude 20m lower than the starting point. What are the magnitude and direction of the rock s velocity at impact?
A hot - air balloon is rising vertically at a constant speed of 5 m.s-1, when the binoculars of an occupant fall overboard. The binoculars will:
Find the magnitude and direction of the resultant of the following vectors using Laws of Sines and Cosines:10 N, E50°N and 8 N, W10°S.
