5. A 200g block of lead and a 200g block of aluminum are placed on an...
5. A 200g block of lead and a 200g block of aluminum are placed on an underwater scale. For which block will the scale read a greater weight?
A. The lead block B. The Aluminum Block C. Both will have the same weight D. Neither will have any weight
_____ 8. What is the ideal mechanical advantage (IMA) of a “block and tackle” pulley system with 5 pulleys?
A. 1 B. ½ C 2 D. 5 E. 1/5 F. No way to tell
4. A 15.4 kN Force is applied to a master hydraulic cylinder of cross sectional area 2.0cm2. What is the Force output by the slave cylinder if the cross sectional area of the slave is 10.0 cm2
A there is no output Force B. 3.1kN C. 15.4kN D. 77 kN E. 385kN
6. The energy “lost” in an inelastic collision
A actually disappears B. is converted to heat C. is converted to sound D, is converted to Kinetic energy
10. A solid 2.0kg lead block (r=13.6x103kg/m3) and a solid 2.0kg aluminum block (r=2.88x103kg/m3) are resting at the bottom of a 1.00 meter deep fish aquarium. Which of the following statements are true?
A. The buoyant force on the lead block is greater B. The buoyant force on the aluminum block is greater
C. The buoyant force on both blocks is equal D. it depends on whether the aquarium is filled with water or air
Homework Answers
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5. A 200g block of lead and a 200g
block of aluminum are placed on an...
a 20cm^3 block of lead and a 20cm^3 block of copper are completely under water. Each...
a 20cm^3 block of lead and a 20cm^3 block of copper are completely under water. Each is suspended by a thread so that they both hang at the same height in an aquarium filled with water. Which of the following is true? Please explain to why you chose the correct answer. a. The buoyant force is greater on the lead than on the copper. b. The buoyant force is greater on the copper than on the lead. c. The buoyant...
A heavy lead block and a light aluminum block of equal sizes are both submerged in...
A heavy lead block and a light aluminum block of equal sizes are both submerged in water. Upon which is the buoyant force greater
A 0.025 m3 block is submerged in water as shown in the figure. A 5 m length cylinder with cross-sectional area of 20 cm2 is attached to the block and the wall. If the cylinder mass is 1.25 kg and cre...
A 0.025 m3 block is submerged in water as shown in the figure. A
5 m length cylinder with cross-sectional area of 20 cm2 is attached
to the block and the wall. If the cylinder mass is 1.25 kg and
creates a 12 degree angle to the horizontal line, what is the mass
of the block?
A0.25 m 5 m 0 12 V0.025 m3
A0.25 m 5 m 0 12 V0.025 m3
cannot figure out 3-6 In units of A) N/m2 and B) Atmospheres, calculate the total pressure...
cannot figure out 3-6
In units of A) N/m2 and B) Atmospheres, calculate the total pressure at the bottom of the Milwaukee Depth, the deepest part of the Bermuda Triangle, which reaches a depth of 8380 meters. 3. If the pressure in the hallway would suddenly drop by 10 %, and the room pressure remained at atmospheric pressure, what would be the amount of net force on the door, assuming the door has dimensions 3 ft x 7 ft and...
a block of aluminum weighs 620 N in air. the density of Aluminum is 2700 kg/m3...
a block of aluminum weighs 620 N in air. the density of Aluminum is 2700 kg/m3 when sunmerged in an unknown fluid, the blocks apparent weight is 303 N what is the density of the unknown fluid? please show all the work getting lost somewhere options a 1050kg/m3 (blood) b. 1000 kg/m3. (water) c. 1380 kg/m3 (corn syrup) d. 13600 kg/m3 (mercury) e. 720 kg/m3 (gasoline)
A block in the shape of a rectangular solid has a cross-sectional area of 4.58 cm2...
A block in the shape of a rectangular solid has a cross-sectional area of 4.58 cm2 across its width, a front-to-rear length of 21.7 cm, and a resistance of 1370 Ω. The block's material contains 5.69 × 1022 conduction electrons/m3. A potential difference of 39.7 V is maintained between its front and rear faces. (a) What is the current in the block? (b) If the current density is uniform, what is its magnitude? What are (c) the drift velocity of...
A block in the shape of a rectangular solid has a cross-sectional area of 3.03 cm2...
A block in the shape of a rectangular solid has a cross-sectional area of 3.03 cm2 across its width, a front-to-rear length of 15.9 cm, and a resistance of 1050 Ω. The block's material contains 7.90 × 1022 conduction electrons/m3. A potential difference of 34.2 V is maintained between its front and rear faces. (a) What is the current in the block? (b) If the current density is uniform, what is its magnitude? What are (c) the drift velocity of...
A 100 kg block of lead with a density of 11,340 kg/m3 is submerged/floating in saltwater...
A 100 kg block of lead with a density of 11,340 kg/m3 is submerged/floating in saltwater with a density of 1024 kg/m3. a) Will the block float? Provide your reasoning and a sketch of the situation. (10 Points) b) What is the force of buoyancy on the lead block? (10 Points) c) What is the force due to gravity on the lead block? d) What is the force of buoyancy on a 100 kg block of wood with a density...
When checking the weight of the solid used in the laboratory experiment by suspending the solid...
When checking the weight of the solid used in the laboratory experiment by suspending the solid from the spring scale in air per the specifications in Part 1 of the Procedure section of the laboratory assignment, the tension the spring scale registers for the solid is not exactly equal to the magnitude of the weight of the solid. This is due to the buoyant force of the air acting on the solid. The density of air is 1.204kg/m3 at 20°C...
Archimedes Principle - Downward Push Additional Force As shown in the above figure, a solid block...
Archimedes Principle - Downward Push Additional Force As shown in the above figure, a solid block with a mass of 6.00 kg and a density of 790.00 kg/m^3 kg/m3 floats quietly in water (density of watser = 1000 kg/m3.) (a) Calculate the total volume (in m3) of the block. Keep 4 decimal places in all answers. (Don't use scientific notations.) Enter a number Submit (5 attempts remaining) Draw a force diagram (as practice, no submission) including all the forces on...
A 0.025 m3 block is submerged in water as shown in the figure. A
5 m length cylinder with cross-sectional area of 20 cm2 is attached
to the block and the wall. If the cylinder mass is 1.25 kg and
creates a 12 degree angle to the horizontal line, what is the mass
of the block?
A0.25 m 5 m 0 12 V0.025 m3
A0.25 m 5 m 0 12 V0.025 m3
cannot figure out 3-6
In units of A) N/m2 and B) Atmospheres, calculate the total pressure at the bottom of the Milwaukee Depth, the deepest part of the Bermuda Triangle, which reaches a depth of 8380 meters. 3. If the pressure in the hallway would suddenly drop by 10 %, and the room pressure remained at atmospheric pressure, what would be the amount of net force on the door, assuming the door has dimensions 3 ft x 7 ft and...
A 100 kg block of lead with a density of 11,340 kg/m3 is submerged/floating in saltwater with a density of 1024 kg/m3. a) Will the block float? Provide your reasoning and a sketch of the situation. (10 Points) b) What is the force of buoyancy on the lead block? (10 Points) c) What is the force due to gravity on the lead block? d) What is the force of buoyancy on a 100 kg block of wood with a density...
When checking the weight of the solid used in the laboratory experiment by suspending the solid from the spring scale in air per the specifications in Part 1 of the Procedure section of the laboratory assignment, the tension the spring scale registers for the solid is not exactly equal to the magnitude of the weight of the solid. This is due to the buoyant force of the air acting on the solid. The density of air is 1.204kg/m3 at 20°C...
Archimedes Principle - Downward Push Additional Force As shown in the above figure, a solid block with a mass of 6.00 kg and a density of 790.00 kg/m^3 kg/m3 floats quietly in water (density of watser = 1000 kg/m3.) (a) Calculate the total volume (in m3) of the block. Keep 4 decimal places in all answers. (Don't use scientific notations.) Enter a number Submit (5 attempts remaining) Draw a force diagram (as practice, no submission) including all the forces on...
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