(a)
Interpretation:
The speed of head of the hammer at which it must be travelling at the moment of impact to ring the bell is to be calculated.
Concept introduction:
The kinetic energy of the hammer is calculated by the formula,
The transfer of energy from hammer to the metal ball takes place when a pedal is hit hard by a hammer. The speed of metal ball can reduce if the friction between metal ball and surface of the pole is more.
(b)
Interpretation:
The three assumptions made to solve Part (a) and their impact on solution is to be stated.
Concept introduction:
The kinetic energy of the hammer is calculated by the formula,
The transfer of energy from hammer to the metal ball takes place when a pedal is hit hard by a hammer. The speed of metal ball can reduce if the friction between metal ball and surface of the pole is more.
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
- Alexander, who weighs 150lb, decides to climb Mt. Krumpett, which is 5250 m high. For his food supply, he decides to take nutrition bars. The labels on the bars states that each 100-g bar contains 10 g of fat, 40 g of protein, and 50 g of carbohydrates. One gram of fat contain 9 Calories, whereas each gram of protein and cabohydrates contain 4 Calories. Alexander wants to know excatly how many bars to pack for the journey. To provide a margin of safety, he assumes that he will need as much energy for the return trip as the uphill climb. How many bars should Alexander packarrow_forwardA cylinder measuring 2.9 cm wide and 3.5 cm high is filled with gas and the piston pushed down with a steady force. piston cylinder gas Calculate the force on the piston if the pressure in the gas is measured to be 879. kPa. Write your answer in units of kilonewtons. Be sure your answer has the correct number of significant digits. |kNarrow_forward(4) The normal melting point of gold is 1064.5 °C and its boiling point is 2660 °C. (a) Convert these two values to the Fahrenheit and Kelvin scales. (b) Find the difference between those two values in Celsius. (c) Repeat (b) using the Kelvin scale. (6) The Eiffel tower is built from iron and it is about 324 m high. Its coefficient of linear expansion is approximately 12 x 10-6 (C°)¯l and assumed constant. What is the increase in the tower's length when the temperature changes from 0°C in winter to 30°C?arrow_forward
- + |/ 00 %24 D. Two bulbs are connected by a stopcock. The 7.50 L bulb contains nitric oxide (NO) at a pressure of 0.340 bar, and the 2.50 L bulb contains oxygen (O,) at a pressure of 0.510 bar. 02 ON After the stopcock is opened, the gases mix and react to produce nitrogen dioxide (CON) 2 NO(g) + 0,(g) – 2 NO,(g) Considering that the volume remains unchanged during the experiment, how does the total pressure in the bulbs change if the reaction is allowed to go to completion? The total pressure will remain constant. O There is not enough information to determine how the total pressure will change. O The total pressure will decrease. O The total pressure will increase. MacBook Pro ( The %23 %24 7. 4. 5. 3. R %3D K. H. B C. option command MOSISOarrow_forwarda) Learning units: Hospitals need compressed oxygen cylinders. Suppose you are given the choice of purchasing four oxygen cylinders: the red one (P = 2.0 atm, V = 34000 cm³), the blue one (P = 24 bar, V = 1.0 L), the green one (P = 22,000 Pa, V = 24 L), and a special yellow one with 1024 oxygen molecules. If they are the same the price, which cylinder should you purchase? Show your reasoning. Assume ideal gas behavior and the gases are at room temperature (25°C).arrow_forward2 dN F (V )dV = N M 4 7 (- 2 ART MV 3/2y ? exp( 2 RT where dN, the number of particles having a velocity between v and v+dV, V velocity of molecules, M moleculer mass of gase, T temperature = |V ² † (V )dV =? 2-arrow_forward
- Which is greater -- the average speed or the most-probable speed? Explain why this is the case.arrow_forwardAva wants to use an inflatable rubber raft to do a polar bear plunge on New Year's Day. She inflates the raft to one atmosphere in her garage at room temperature, 20°C. She then drives out to the lake where she and her friends are going to swim very briefly in water at a temperature of 1°C. Which of the following scenarios ill most likely occur? The decrease in temperature will cause a decrease in the volume of the raft and this drop in volume may cause Ava to sink while on the raft. The decrease in temperature will cause an increase in the volume of the raft and this in- crease in volume may cause Ava to sink while on the raft. The decrease in temperature will cause a decrease in the volume of the raft and this drop in volume will help keep Ava afloat. The decrease in temperature will cause an increase in the volume of the raft and this in- crease in volume will keep Ava afloat.arrow_forwardAt a particular temperature, Kc=1.6x10^-2 forarrow_forward
- fill in the values for qrxn and delta Hrxn and show how they are calculatedarrow_forwardCalculate the kinetic energy of a ×9.41012kg comet moving at a speed of 39.0kms .Round your answer to 2 significant digits.arrow_forwardActivity 4: To qualify for the Boston Marathon a 45 year old man must finish a prior marathon (26.22 miles) in 3.50 hours or less. To what average speed (in meters per second) does this correspond?arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning