Determine the intensity of light waves from the sun
The Sun emits light waves with a power of 4x1026 Watts. Determine the intensity of light waves from the sun just outside the atmospheres of Venus, Earth and Mars.
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The bullet then emerges on the other side of the board with a speed of +234 m/s. Assuming constant acceleration (rather, deceleration!) of the bullet while inside the wooden board, calculate the acceleration.
What is the probability of a randomly selected credit card holder has a credit card balance less than $2,500? Use the standard normal table for this, using the population mean and standard deviation.
Find the heat transfer and work per unit mass of air in KJ/kg for each process of the two cycles, and compare the thermal efficiency of each. Assume constant specific heats at room temperature, and k=1.4.
An organic compound (molar mass=97) is dissolved in water to form asolution with a density of 1.05 g/mL and a molarity of 2.09 M. What is the molality of the solution?
We know that the average life of a light bulb is 10,000 hours. There are 12 lightbulbs in a classroom. In order for a class to be held in the room,9 or more lightbulbs must be working. Each light bulb works independently of the other light bulbs i
The osmotic pressure of 180.0 mL solution of sucrose(C12H22O11) in ethanol at28.0°C is 1.85 atm. What is the molar concentration of the sucrose solution? Assume ideal behavior of the solution.
The force has magnitude 2.0 N and is directed at a counterclockwise angle of 100° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement?
A spring is initially compressed from a free length of 8in to a length of 6in, making a net initial compression of 2in. What additional work is done in comressing it 3in more (5 inches total) to a 3in length?
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