Two pucks are sliding across a frictionless surface. Puck A has
a mass of .330 kg and a velocity of 5.50 m/s in the x direction.
puck be has a mss of .440 kg and a velocity of 6.60 m/s in the
negative x direction.
the pucks collide an bounce of each other. after the collision
puck a has a velocity of 1.10 m/s in the positive y-direction. What
are the x and y components of the velocity of puck...
James Watt once observed that a hard-working horse can lift a
330 lb mass 100 ft in 1 min. Assuming the horse generates energy to
accomplish this work by metabolizing glucose:
C6H12O6(s)+6O2(g)→6CO2(g)+6H2O(l)C6H12O6(s)+6O2(g)→6CO2(g)+6H2O(l)
How much (in gram) glucose must a horse metabolize to sustain this
rate of work for 1 hour, if the temperature is 250C250C? (1 lb =
0.4536 kg, 1 ft = 0.305 m, g=9.81 ms2ms2)
A cylindrical soda can has a radius of 6cm and a height of 12cm.
When the can is full of soda, the center of mass of the contents
of the can is 6cm above the base on the axis of the can (halfway
along the axis of the can). As the can is drained, the center of
mass descends for a while. However, when the can is empty (filled
only with air), the center of mass is once again 6cm...
question one 100 kg of a gas has the following mass composition:
19.3% CO2, 6.5% O2 , 2.1% H2O and 72.1% N2
What is the mole fraction of each component in the mixture?
Molecular weight of (CO2= 44, O2=32, H2O=18, N2=28)
question two The density of a certain solution is 1.05 g/cm3 at
25°C. How many cubic meters will be occupied by 5000 kg of this
solution.
A regulation basketball has a 25.0-cm diameter and a mass of
0.560 kg. It may be approximated as a thin spherical shell with a
moment of inertia (2/3)MR^. Starting from rest, how long will it
take a basketball to roll without slipping 4.00 m down an incline
at 30.0° to the horizontal?
a spherical vessel with a diameter of 2cm when empty,
has a mass of 2.00g. what is the greatest volume of water that can
be placed in the vessel and still have the vessel float at the
surface of water?
A bicycle wheel has a diameter of 63.0 cm and a mass of 1.74 kg.
Assume that the wheel is a hoop with all of the mass concentrated
on the outside radius. The bicycle is placed on a stationary stand
and a resistive force of 117 N is applied tangent to the rim of the
tire.
(a) What force must be applied by a chain passing over a
8.99-cm-diameter sprocket in order to give the wheel an
acceleration of 4.49...
A 410-turn solenoid, 21 cm long, has a diameter of 4.0 cm . A
12-turn coil is wound tightly around the center of the
solenoid.
If the current in the solenoid increases uniformly from 0 to 5.0
A in 0.51 s , what will be the induced emf in the short coil during
this time?
A uniform brass solid cylinder has a mass, m = 500 g, and a
diameter, D = 6 cm and a length L = 1 m. The cylinder rotates about
its axis of rotational symmetry at an angular velocity of 60
radians/s on a frictionless bearing.
(a) What is the angular momentum of the cylinder?
(b) How much work was required to increase the angular momentum
of the cylinder to this value if the cylinder was initially at
rest? Once...
A hot air balloon of 25 m in diameter has a mass of 95 kg
including its cage when empty. This balloon is accelerating upward
at an acceleration of 1 m/s^2 in the air at a location where the
atmospheric pressure and temperature are 85 kPa and 13 C
respectively while carrying 3 people with a mass of 70 kg each.
Determine the average temperature of the air in the balloon assume
equal pressure between the inside of the balloon...