Homework Answers
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answer :-
part A = 21 x 10-3 m3
part B = 20 N
solution
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Constants A person pushes a 12.5 kg lawn mower at constant speed with a force of...
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Please solve A and B
A person with a mass of 72 kg and a volume of 0.86 m^3 floats quality in water What is the volume of the person that is above water? Express your answer using two significant figures. It an upward from F is applied to the person by a friend the volume of the person above by 9.0024 m^2. Find the force F Express your answer using two significant figures.
Review Constants 1 Periodic Table A 72 -kg person is accidentally exposed for 234 s to a 17 –mCi source of beta radiation coming from a sample of Sr. Part A What is the activity of the radiation source in disintegrations per second? Express your answer using two significant figures. IVO A O ? disintegrations per second Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the activity of the radiation source in...
IP A block of wood floats on water. A layer of oil is now poured on top of the water to a depth that more than covers the block, as shown in the figure(Figure 1). Part A Is the volume of wood submerged in water greater than, less than, or the same as before? O greater O less the same Submit Request Answer Part B If 95 % of the wood is subrrierged in water before the oil is added,...
Constants A person pushes a 12.5 kg lawn mower at constant speed with a force of 81.0 N directed along the handle, which is at an angle of 45.0° to the horizontal Part A Draw the free-body diagram showing all forces acting on the mower. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. + 2 O No elements selected We were unable to transcribe this imageConstants - Part B A...
Part A If a person does 70 J of work in moving a 30 kg box over a 14 m distance on a horizontal surface, what is the minimum force required? Express your answer using two significant figures. 30 AXC ROO? Submit Request Answer C Exercise 5.2 A50 kg box slides a 10 m distance on ice. Part A If the coefficient of kinetic friction is 0.28, what is the work done by the friction force? Express your answer using...
A 3.1-m-diameter merry-go-round with rotational inertia 110 kg · mº is spinning freely at 0.60 rev/s . Four 25-kg children sit suddenly on the edge of the merry-go-round. Find the new angular speed. Express your answer using two significant figures. IVO AQ R O 2 ? 1 rev/s Submit Request Answer Part B Determine the total energy lost to friction between the children and the merry-go-round. Express your answer using two significant figures. IVO AQ R O 2 ? AK...
An iron atom has a magnetic dipole moment of about 1.8 x 10-23 A · mº Part A Determine the dipole moment of an iron bar 9.2 cm long, 12 cm wide, and 1.8 cm thick, if it is 100 percent saturated Express your answer using two significant figures. 170 A mO O ? A m2 Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What torque would be exerted on this bar when placed...
Calculate the final concentration of each of the following diluted solutions. Part A A 50.6 mL sample of 4. aOH is diluted with water so that the final volume is 104.0 mL Express your answer using two significant figures. PO AQ R O 2 ? Chimal = Cfinal = % (m/v) Submit Request Answer Part B A 13.0 mL sample of 40 % (m/v) acetic acid (CH3 COOH) solution is added to water to give final volume of 25 mL....
The uniform load has a mass of 350 kg and is lifted using a uniform 45-kg strongback beam BAC and four ropes as shown (Figure 1) Figure (< 1 of 1 > 1.25 m 1.25 m 1.5 m Part A Determine the tension in each rope. Express your answer using three significant figures and include the appropriate units. HÅR O 2 ? T= Value Units Submit Request Answer Part B The force that must be applied at A. Express your...
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