Thursday

April 24, 2014

April 24, 2014

Total # Posts: 16

**science**

With the class watching from a safe (and dry!) distance below, suppose the student drops the balloon and the balloon hits the sidewalk with a force of 20 N. How much work was done on the sidewalk by the balloon?

**biology**

draw a graph of balloon diameter vs. temperature. what is the correlation?

**physics**

A leather ball of circumference 75.9 m and mass 557 g is forced to the bottom of a swimming pool and then released. After initially accelerating upward, it rises at a constant velocity. a) Calculate the buoyant force on the ball. b) Calculate the drag force the ball experience...

**physics**

A supertanker filled with oil has a total mass of 14.1·10^8 kg. If the dimensions of the ship are those of a rectangular box 271 m long, 93.1 m wide, and 93.1 m high, determine how far the bottom of the ship is below sea level (ρsea = 1020 kg/m^3).

**physics**

A 2.49-m-long string, fixed at both ends, has a mass of 7.17 g. If you want to set up a standing wave in this string having a frequency of 455 Hz and 5 antinodes, what tension should you put the string under?

**physics**

131.4 g = 0.1314 kg

**physics**

In a lab, a student measures the unstretched length of a spring as 0.109 m. When a 131.4-g mass is hung from the spring, its length is 0.201 m. The mass-spring system is set into oscillatory motion, and the student observes that the amplitude of the oscillation decreases by ab...

**physics**

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...

**physics**

A vertical spring with a spring constant of 1.89 N/m has a 0.307-kg mass attached to it, and the mass moves in a medium with a damping constant of 0.0221 kg/s. The mass is released from rest at a position 4.81 cm from the equilibrium position. How long will it take for the amp...

**physics**

A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...

**physics**

Suppose a simple pendulum is used to measure the acceleration due to gravity at various points on the Earth. If g varies by 0.151 % over the various locations where it is sampled, what is the corresponding variation in the period of the pendulum? Assume that the length of the ...

**chemistry**

a 14.7g ice cube is placed into 324g og water. calvulate the temperature change in the water upon complete melting of the ice. hint: determine how ,uch heat is absorbed by the melting ice and then use q=mc delta T to calculate the temperature change. use the heat of fusiion fo...

**chemistry **

How much energy is released when 2.55kg of diethyl ether freezes?

**chemisry**

A 0.125 gram sample if a monoprotic acid of unknown molar mass is dissloved in water and titrated with 0.1003 MNaOH. The endpoint is reached after adding 20.77 ml of base. What is the molar mass of the unknown acid?

**Math**

How do you sovle for P

**acrostic peom for march**

M A R C H please help me today is my last day

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