Which measurement has 4 significant figures A 0001 kg B 1000 kg C

Draw and find the frequencies of first 2 harmonics for following tubes

a. A tube open at both ends (tube length is 9.1 m)

b. A tube open at one end (tube length is 2.8 m)

Which one has the higher frequency?

1. a. Find the amount of heat needed to change the temperature of 191.0 g of ice from -20 °C to 20 °C. The specific heat of water

is 4186 J/kg°C, Latent heat of fusion is 3.33 x10' J / kg, laten heat of vaporization 2.25 x 10° J/ kg.

b. A patient of mass 14.0 kg is spiking a fever of 105 Fahrenheit. The patient is immersed in ice bath O°C ice to reduce the

fever immediately back down to 98.6 Fahrenheit. How much ice must melt (bath stays at 0°C water) for this

temperature reduction to be achieved? Latent heat of fusion is 3.33 x10' J/kg, and Specific heat of body is 3500 J/kg°C 

Express CCW torque in terms of given symbols  and numbers in the figure? 

100g on CCW and 150 on CW , center of mass 45

: A block of mass m=1.4 kg, moving on a frictionless surface with a velocity of vi=2.0 m/s, collides with a block of mass M=9.1 Kg at rest. After the collision, the m block recoils with a velocity of vf=0.5 m/s.

a)write initial momentum of the system by using symbols only?

b)write final momentum of the system by using symbols only?

c)use momentum conservation and solve for unknown v by using symbols?

d)calculate v?

e)show hether the collision is elastic or inelastic?

f)Find the impulse of one object?

1: A block of mass m=14.0/10 kg, moving on a frictionless surface with a velocity of vi=2.0 m/s, collides with a block of mass M=91.0/10 Kg at rest. After the collision, the m block recoils with a velocity of vf=0.5 m/s.

a)write initial momentum of the system by using symbols only?

b)write final momentum of the system by using symbols only?

c)use momentum conservation and solve for unknown v by using symbols?

d)calculate v?

e)show hether the collision is elastic or inelastic?

f)Find the impulse of one object?

A meter stick is balanced at its center. If a 3.0 kg mass is suspended at x=0 m, where would you need to place a mass of 5.0 kg to have the system in equilibrium?

use this formula:   r2 = m1T1/m2