If an object accelerates from rest to its final vermouth in 12.3 s what is the final velocity if it traveled 200m
The light given off from a candle is which method of heat transfer? A. Conduction B. Convection C. Radiation
A student is performing bomb calorimetry for a combustion reaction. The bomb calorimeter normally holds 5 L of water with a heat capacity of 4.184 J/g•°C. However, the student misread the directions and used 6 L of ethanol which has a heat capacity of 2.46 J/g•°C. If the student calculates the energy released by the reaction assuming it was 5 L of water, what will be the difference between the actual energy of the reaction and the calculated energy? Note: the densities of ethanol and water under normal conditions are 0.8 g/mL and 1.0 g/mL, respectively.
A 0.056 kg sample of an unknown substance is heated to 89.6 °C in a hot water tube. It is then quickly removed and placed into an insulated jar holding 188 ml of water initially at 132.8° F. The final equilibrium temperature of the system is 67° C. What is the specific heat of this unknown substance?
a basketball player achieves a hang time of 0.671 s when dunking the ball. What vertical height will he attain? The acceleration of gravity is 9.8 m/s^2. Answer in units of m.
A 2.40 kg stone is sliding in the +x-direction on a horizontal, frictionless surface. It collides with a 4.00 kg stone at rest. After the collision the 2.40 kg stone is moving at 3.60 m/s at an angle of 30.0∘ measured from the +x-direction toward the +y-direction and the 4.00 kg stone is moving at an angle of 45.0∘ measured from the +x-direction toward the −y-direction. A) What is the y-component of momentum of the 2.40 kg stone after the collision? B) What must be the y-component of momentum of the 4.00 kg stone after the collision? C) What is the speed of the 4.00 kg stone after the collision? D) What is the x-component of the total momentum of the two stones after the collision? E) What is the speed of the 2.40 kg stone before the collision?
A 2.5 newton weight falls freely from rest from the roof of a building. What is the total distance the weight falls in the first 4.0 seconds?
Q10. In an ideal situation without any air resistance, any free-falling body will fall at the same rate of acceleration, regardless of its mass, and thus would simultaneously hit the ground if released from the same height. However, in real-life scenarios, air resistance plays a vital role in determining the fall rate of any object. Which parameters would affect the fall if air drag is also considered? Choose all possible answers. Weight of the object. >> Shape of the object. Density of the air. Velocity of the object. Submit
Part A Calculate the maximum increase in photon wavelength that can occur during Compton scattering. Express your answer to three significant figures and include the appropriate units. AA max = 4.85x10-12 m What is the energy of the smallest-energy X-ray photon for which Compton scattering could result in doubling the original wavelength? Express your answer in megaelectronvolts to three significant figures.
A 1,286-kg car is skidding to a stop along a horizontal surface. The car decelerates from 26.9 m/s to rest in 9.36 seconds. How far did the car skid before coming to rest?
1.- A car travels 10.0 km due north, then 8.00 km due east in 30.0 minutes. Find the car's Distance. Displacement (indicate the angle too) Average speed Average velocity
A ball rolls down a hill with a constant acceleration of 2 m/. The ball starts at rest and travels for 4.0 s before it stops 2.-What was the ball's velocity just before it stopped? a) 2.0 m/s. b) 8.0 m/s c)12 m/s d) 16 m/s
The Moon takes about 29 days to orbit Earth. In this activity, there were eight positions the Moon could be in. a. How many days would it take for the Moon to get from position #2 to position #4 in its orbit? b. What phases would the Moon go through as it traveled from position #2 to position #4? HELP
A turbo-generator, 16 cylinder, vee type diesel engine has an air consumption of 3000 kg/hr per cylinder at rated load and speed. This air is drawn in thru a filter by a centrifugal compressor
