A 151 g oscillator has a speed of 130 cm/s when its displacement
is 2.00 cm and 75.5 cm/s when its displacement is 5.10 cm . What is
the oscillator's maximum speed?
A 195 g oscillator has a speed of 125.0 cm/s when its
displacement is 2.30 cm and 71.0 cm/s when its displacement is 5.30
cm .
What is the oscillator's maximum speed?
Show work please.
A 456 g oscillator has a speed of 98.0 cm/s when its
displacement is 3.00 cm and 69.0 cm/s when its displacement is 5.30
cm.
What is the oscillator's maximum speed?
A sinusoidal wave is traveling on a string with speed 34.9 cm/s.
The displacement of the particles of the string at x = 5.9
cm is found to vary with time according to the equation
y = (3.9 cm) sin[1.2 - (7.1
s-1)t].
The linear density of the string is 4.8 g/cm. What are
(a) the frequency and (b) the
wavelength of the wave? If the wave equation is of the form
y(x,t) = ym sin(kx -
ωt),
what are...
A 240 g , 25-cm-diameter plastic disk is spun on an axle through
its center by an electric motor.
What torque must the motor supply to take the disk from 0 to
2000 rpm in 4.3 s ?
Express your answer in newton-meters.
t=
A 240 g , 25-cm-diameter plastic disk is spun on an axle through
its center by an electric motor.
What torque must the motor supply to take the disk from 0 to
1800 rpm in 4.8 s ?
2Fe2O3(s)+3 CO2(g)+4 Fe(s)
A) if 2.70 g of Fe2O and 4.05 of carbon react, what mass of
iron is expected to form?
B) what was the limiting reactant?
C) How much excess reagent (in grams) is left at the end of
the reaction?
D) if percent yield is 92%, what mass of iron was actually
obtained in the reaction? (Actual yield?)
A 0.200-kg block on a smooth horizontal surface gains a speed of
28.2 cm/s when it is released from rest at the free end of a spring
that is compressed by 3.20 cm. The block is then connected to the
free end of the spring to form a mass-spring system.
What is the spring
constant? (A) 15.5 N/m; (B)
16.5 N/m; (C) 17.5 N/m; (D) 18.5 N/m; (E) 19.5 N/m.
What is the period of this harmonic oscillator? (A) 0.413...
An arrow is shot straight up in the air with an initial speed of
240 ft/s. If on striking the ground it embeds itself 8.00 in into
the ground, find the magnitude of the acceleration (assumed
constant) required to stop the arrow, in units of
feet/second^2.
An electron with a speed of 7.61 × 108 cm/s in the
positive direction of an x axis enters an electric field
of magnitude 1.14 × 103 N/C, traveling along a field
line in the direction that retards its motion. (a)
How far will the electron travel in the field before stopping
momentarily, and (b) how much time will have
elapsed? (c) If the region containing the electric
field is 7.36 mm long (too short for the electron to stop...