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The length of an aluminum pipe at 24 Celsius is 47.0cm. What is it’s length at 66 Celsius? State your answer in cm to nearest 0.001 cm, follow the standard rounding rules in stating answer. Take the thermal expansion coefficient of aluminum to be 24*10^-6/K, and take the absolute zero to be -273 Celsius.
Mercury is poured into a u-tube with two cylinders arms of different radii. Both arms are cylindrical tubes. The left arm of the tube has a radius of 8.4cm, and the right arm has a radius of 4.0cm. 160g of water are then poured into the right arm. Given that the density of mercury is 13.6 g/cm3, and density of water is 1g/cm3 to what height h above the mercury level in the right arm, does the mercury rise in the left arm? State your answer in cm to the nearest hundredth cm. Use g=9.8 m/s2
one mole of ideal gas (avogadro number: 6.02*10^23 molecules) occupies the 22.4 litres under normal condition. What fraction of this volume is actually occupied by the ideal gas molecules? Treat the molecules of gas as sphere of radius of 1 angstroms.
state your answer to the nearest 0.00001
A mercury thermometer is constructed as shown above. The glass capillary tube has a diameter of 0.005cm, and the bulb has a diameter of 0.26cm. Find the change in height of the mercury column that occurs with a temperature change of 50 Celsius. State answer in mm to the nearest mm.
Hint: to simply the problem, assume that the dimensions of the capillary tube will not change(so assume that only the bulb experiences temperature change)
Linear expansion coefficient of glass is 3.6 * 10^-6(celcius)^-1
Volume expansion coefficient of mercury is 182*10^-6(Celsius)^-1
Two people push a shopping cart with equal force. The cart is accelerating 0.75 m/s2, and the force each person is exerting is 34 N. There is a 0.5 N force of friction, an 882 N force of gravity, and an 882 N normal force. What is the mass of the shopping cart?
A) 5 x 10^12 S-1
B) 4 x 10^10 S-1
C) 2 x 10^14 S-1
D) 3 x 10^13 s
A) 8, out of which 2 are acoustic and 6 optical
B) 9, out of which 3 are acoustic and 6 optical
C) 12, out of which 3 are acoustic and 9 optical
D) 12, out of which 2 are acoustic and 10 optical
A70-kg
k
g
student sitting on a hardwood floor does not slide until pulled by a 250-N
N
horizontal force.
Determine the coefficient of static friction between the student and floor.
What is the distance travelled by a race car starting at rest and accelerates to a final speed of 17.5 m/s at a constant rate of 5.00 m/s^2? O 16.6 m 30.5 m 21.4 m 23.0 m
#339914 on Dec 2023