Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 12.1, Problem 3bT
To determine
To Compare: The magnitudes of the horizontal forces on the small volume of the liquid.
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(b) What is the magnitude of the force would she have to exert if the steel parts were oiled? When rebuilding her car’s engine, a physics major must exert 300 N of force to insert a dry steel piston into a steel cylinder. What is the magnitude of the normal force between the piston and cylinder?
Solve for Part A and Part B
A solid, square pinewood raft measures 4.0 m on a side and is 0.30 m thick.(a) Determine whether the raft floats in water, and(b) if so, how much of the raft is beneath the surface?
Remember: Conversion factor(density of pinewood = 550 kg/m3, density of water = 1000 kg/m3)
By definition, pressure is equal to the force exerted per unit area or P =
F
A
. Suppose that you place a 22 kg block on the a table.(a) If the bottom surface of the block has an area of 0.44 m2. What is the pressure caused by the block as it sits on the table? (Hint: You will need to find the weight of the block in order to know the force exerted. Use 10 m/s2 for gravity.)P = _______ Pa(b) How would your answer to part (a) change if the are of the block is 0.22 m2?P = ______ Pa
Chapter 12 Solutions
Tutorials in Introductory Physics
Ch. 12.1 - For each layer, draw a free-body diagram in the...Ch. 12.1 - Imagine that a small hole is opened in the...Ch. 12.1 - Prob. 2aTCh. 12.1 - Suppose you wanted to determine the pressure at...Ch. 12.1 - Prob. 2cTCh. 12.1 - Prob. 2dTCh. 12.1 - Draw a freebody diagram for the small voulme of...Ch. 12.1 - Prob. 3bTCh. 12.1 - Use your answer to part B to compare the pressures...Ch. 12.1 - Prob. 3dT
Ch. 12.1 - Consider the following student dialogue: Student...Ch. 12.1 - Prob. 4aTCh. 12.1 - The right end of the tube is now scaled with a...Ch. 12.1 - A syringe is used to remove some water from the...Ch. 12.2 - A cubical block is observed to float in a beaker...Ch. 12.2 - Prob. 1bTCh. 12.2 - Imagine that you were to release the block from...Ch. 12.2 - In general, does the buoyant force on an object...Ch. 12.2 - By how much does the volume reading increase when...Ch. 12.2 - Does the volume of water displaced by a completely...Ch. 12.2 - Consider the following statement made by a...Ch. 12.2 - A rectangular block, A, is released from rest at...Ch. 12.2 - A second block, B,of the same size and shape as A...Ch. 12.2 - A third block, C, of the same size and shape as A...
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- Please help thanks! (a) When rebuilding his car's engine, a physics major must continuously exert 3.74 ✕ 102 N of force to insert a dry steel piston as it slides into a steel cylinder. What is the normal force (in N) between the piston and cylinder? (Enter the magnitude.) I ALREADY SOLVED A AND GOT: 1246.67N. AND IT WAS CORRECT. NEED HELP WITH B. (b) What force (in N) would he have to continuously exert if the steel parts were oiled? (Enter the magnitude.)arrow_forwardA bird moving in air or a fish moving in water experiences a force opposite to its direction of motion. Do you expect any change in the magnitude of this force? (a) If additional external pressure is applied to fluid and its pressure is increased to P0-0.10°Pa. (b) If the fluid is external pressure is reduced to P0-0.10°Pa. Clearly mention your assumptions (if there is any) and justify your answer for each case.arrow_forwardWhen rebuilding her car's engine, a physics major must exert 500 N of force to insert a dry steel piston into a steel cylinder. What is the magnitude of the normal force in newtons between the piston and cylinder? Narrow_forward
- For which of the following game, players must have the knowledge of Pascal's law? A) Climbing B) Paragliding C) Rafting D) Scuba divingarrow_forwardPart A : What is the volume of the block? Part B: What is the density of the block? Part C: Comparing your finding with the web and comment what material is the block made of? Part D: What is the density of the oil? Comment on the type of oil too.arrow_forwardPlease answer parts B, C and D! A beachball has a diameter of 24 cm and weighs about 6N. A-What is the volume of the beachball? Then, use this number to calculate the beachball’s average density in kg m-3. B-What is the volume of water displaced by the beachball if it is in the pool? C- Now, using a rope, you tie the beachball to the bottom of the pool so only half of the ball is submerged. What would the diagram look like? D- What is the buoyant force of the tethered beachball? What is the tension on the rope?arrow_forward
- please: a block of mass m= 10.0 kg is pulled along a horizontal frictionless flow by a cord that exerts a force of magnitude F=25 N at an angle = 40. Draw the free boody diagram and find the acceleration of the block?arrow_forwardIn a Millikan experiment, the two forces are assumed to be equal. a. What are these two forces? b. Draw a diagram of forces as these two forces are acting on a drop of oil in equilibrium. c. Briefly explain the principle of this experiment.arrow_forwardA certain boat displaces a volume of 4.5 m° of water. (The density of water is 1000 kg/m.)a. What is the mass of the water displaced by the boat?b. What is the buoyant force acting on the boat? Use the right formula to solve and get the correct answer.arrow_forward
- Water emerges from a faucet at a speed of 1.5 m/s. After falling a short distance, its speed increases to 3 m/s as a result of the gravitational acceleration. By what number would you multiply the original cross-sectional area of the stream to find the area at the lower position? Use the right formula to solve and get the correct answer.arrow_forwardThe density of two liquids (A and B) is given as 1000 kg/m3 and 600 kg/m3, respectively. The two liquids are mixed in a certain proportion and the density of the resulting liquid is 850 kg/m3. How much of liquid B (in grams) does 1 kg of the mixture contain? Assume the volume of the two liquids is additive when mixed. There is an answer provided on the website but I don't understand the part of 1 = 1000(Va) + 600[(1/850) - Va] I'd love a more thorough explanation on how to put that into my calculatorarrow_forwardWhen rebuilding his car's engine, a physics major must continuously exert 4.02 ✕ 102 N of force to insert a dry steel piston as it slides into a steel cylinder. What is the normal force (in N) between the piston and cylinder? (Enter the magnitude.)arrow_forward
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