Question
In: Physics
An automobile traveling at 30.0 m/s has tires 60.0 cm in diameter. What is the angular...
An automobile traveling at 30.0 m/s has tires 60.0 cm in diameter.
- What is the angular velocity “w” (in rev/min) of the tires?
- If the tires are brought to a stop uniformly in 25 turns, what is the angular acceleration “a” (in rad/s2)?
- How far does the car travel during this braking period?
Solutions
genius_generous answered 2 years agoRelated Solutions
At takeoff a commercial jet has a 70.0 m/s speed. Its tires have a diameter of...
At takeoff a commercial jet has a 70.0 m/s speed. Its tires have
a diameter of 0.400 m.
(a) At how many rpm are the tires rotating?
rpm
(b) What is the centripetal acceleration at the edge of the
tire?
m/s2
(c) With what force must a determined 10-15 kg bacterium
cling to the rim?
N
(d) Take the ratio of this force to the bacterium's weight.
(force from part (c) / bacterium's weight)
(a) A 23.0 kg child is...
1.At takeoff a commercial jet has a 65.0 m/s speed. Its tires have a diameter of...
1.At takeoff a commercial jet has a 65.0 m/s speed. Its tires
have a diameter of 0.700 m.
(a) At how many rpm are the tires rotating?
___ rpm
(b) What is the centripetal acceleration at the edge of the
tire?
____ m/s2
(c) With what force must a determined 10-15 kg bacterium
cling to the rim?
____N
(d) Take the ratio of this force to the bacterium's weight.
____(force from part (c) / bacterium's weight)
2.(a) A 19.0 kg...
A 30.0 gg ball of clay traveling east at 1.00 m/sm/s collides and sticks together with...
A 30.0 gg ball of clay traveling east at 1.00 m/sm/s collides
and sticks together with a 40.0 gg ball of clay traveling north at
6.00 m/sm/s .
What is the speed of the resulting ball of clay?
A flywheel with a diameter of 6.5 m is rotating at an angular speed of 150...
A flywheel with a diameter of 6.5 m is rotating at an angular
speed of 150 rev/min. After 95 s the flywheel rotates with angular
speed to 375 rev/min. Find the angular displacement produced by the
flywheel during 25 s interval.
A.
876 rad
B.
678 rad
C.
687 rad
D.
867 rad
A flywheel with a diameter of 1.39 m is rotating at an angular speed of 194...
A flywheel with a diameter of 1.39 m is rotating at an angular
speed of 194 rev/min. (a) What is the angular
speed of the flywheel in radians per second? (b)
What is the linear speed of a point on the rim of the flywheel?
(c) What constant angular acceleration (in
revolutions per minute-squared) will increase the wheel's angular
speed to 1280 rev/min in 128 s? (d) How many
revolutions does the wheel make during that 128 s?
A racquetball (diameter 8.00 cm, mass 60.0 g) is held a negligible distance above a basketball...
A racquetball (diameter 8.00 cm, mass 60.0 g) is held a
negligible distance above a basketball (diameter 30.0cm, mass 610.
g). The bottom of the basketball is 4.00 m above a hard floor e.g.
at the height of the second-floor railing of the physics building.
The two balls are dropped together from rest. The basketball
bounces off the floor and strikes the racquetball. All collisions
have 0.700 coefficient of restitution. Neglecting aerodynamic
effects, calculate the height to which the racquetball...
A racquetball (diameter 8.00 cm, mass 60.0 g) is held a negligible distance above a basketball...
A racquetball (diameter 8.00 cm, mass 60.0 g) is held a
negligible distance above a basketball (diameter 30.0cm, mass 610.
g). The bottom of the basketball is 4.00 m above a hard floor e.g.
at the height of the second-floor railing of the physics building.
The two balls are dropped together from rest. The basketball
bounces off the floor and strikes the racquetball. All collisions
have 0.700 coefficient of restitution. Neglecting aerodynamic
effects, calculate the height to which the racquetball...
What is the diameter of the radar beam at a distance of 30.0 km
a radar for tracking aircraft broadcasts at 12 GHz microwave beam from a 2.0 m-diameter circular radar antenna. From a wave perspective, the antenna is a circular aperture through which the microwaves diffract.
A. what is the diameter of the radar beam at a distance of 30 km?
B. if the antenna emits 100 kW of power what is the average microwave intensity at 30 km?
A solid, uniform cylinder with mass 8.25 kg and diameter 10.0 cm is spinning with angular...
A solid, uniform cylinder with mass 8.25 kg and diameter 10.0 cm
is spinning with angular velocity 245 rpm on a thin, frictionless
axle that passes along the cylinder axis. You design a simple
friction-brake to stop the cylinder by pressing the brake against
the outer rim with a normal force. The coefficient of kinetic
friction between the brake and rim is 0.344.
A pure aluminum bar has a diameter of 15 cm and a length of 1.25 m....
A pure aluminum bar has a diameter of 15 cm and a length of 1.25
m. The rod is initially uniform in temperature at 300?C. The bar is
now suddenly exposed to a convection environment at 50?C with h =
1250 W/m K. How long does it take the center to cool to a
temperature of 80?C? (a) Determine if a lumped capacitance analysis
is or is not appropriate. (b) Determine the cooling time assuming
the lumped capacitance model is...
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