Other Physics Answers

A tuning fork vibrates 200 times per second and sends out a compressional wave

that travels with a speed of 340 m/s. Find (a) the period and (b) the wavelength.

A steel rod 4 m long and 0.5 cm2

in cross sectional area is found to stretch 0.2

cm under a tension of 12000 N. Under these conditions, determine

(a) The stress

(b) The strain; and

(c) Young’s modulus for the material

A rigid plank 5.00 m long has mass 30.0 kg and supports a 75.0kg block 2.00 m from the left end. How much force is needed to support each end of the plank?

Suppose you have two capacitors 8.0 μF and 4.0 μF connected in series and parallel with points a and b whose potential

difference is 20 V. Find the equivalent capacitance and charge.

Suppose you have two capacitors 8.0 μF and 4.0 μF connected in series and parallel with points a and b whose potential

difference is 20 V. Find the equivalent capacitance and charge.

A 72.5 kg

k

g

 skater moving initially at 2.40 m/s

m

/

s

 on rough horizontal ice comes to rest uniformly in 3.52 s

s

 due to friction from the ice.

A, What force does friction exert on the skater?

Express your answer with the appropriate units. Enter positive value if the direction of the force is the same as that of the initial velocity of the skater and negative value if the direction of the force is opposite.

Calculate the specific heat capacity of a new alloy if a 15.4g sample absorbs 393 J when it is heated from 0.0°C to 37.6°C

When gasoline burns in an automobile engine, the heat released causes the product CO₂ and H2O to expand,which pushes the piston outward. if the expanding gases do 789 J of water on the piston and the system loses 245 J of heat, calculate "\\Delta U" in J

calculate the voltage applied to a 2.00-"\\mu"F capacitor when it holds 3.10"\\mu"C of charge

find the charge stored when 5.50V is applied to an 8.00-pF capacitor