PhysicsLab1Data

3. DETAILS MY NOTES ASK YOUR TEACHER In a research facility, a person lies on a horizontal platform which floats on a film of air. When the person's heart beats, it pushes a mass m of blood into the aorta with speed v, and the body and m in 0.160 s platform move in the opposite direction with speed V. Assume that the blood's speed is 40.5 cm/s. The mass of the person + platform is 54.0 kg. The platform moves 5.85 x 10 after one heartbeat. Calculate the mass (in g) of blood that leaves the heart. Assume that the mass of blood is negligible compared with the total mass of the person, and the person + platform is initially at rest. (Also assume that the changes in velocity are instantaneous.)

02 Point material of mass 1 Kgr moves along the x-axis under the influence force F, which opposes the motion and is proportional to its square of speed with proportionality constant B=2. There is no gravity. A) Find the velocity and position of the material point for t > 0, if for t = 0 u = 2 m/s and x=0. B) Investigate your results: 1) if they satisfy the initial conditions, 2) if they have the right dimensions and 3) if in the limit t →∞ they logically give and expected results.

“A 2.0-g feather and a 9.0-kg bowling ball are free falling in vacuum at the surface of the earth. If both the feather and the ball are dropped from the same height, which object experiences greater acceleration?” A. Both objects experience the same acceleration since both are in free fall B. The bowling ball accelerates faster because it is heavier C. The feather accelerates faster because it is lighter

Situational Analysis. Air are often pumped inside a tire in order to keep it rolling across the road. A driver accidentally pumped low amount of air in the truck’s tire. While travelling on the road he observed that the truck become unstable. He moved down and checked the source of the problem. He found out that the tire was almost deflated due to the minimal amount of air pumped.1. How can air pumped in the tire hold up a truck?

Fluid mechanics question

Two identical cups containing sand from the same bag are placed on a balance. Cup A Cup B Which statement about the volume and mass of the sand in the cups is correct? O A. The sand in Cup A has greater volume and greater mass than the sand in Cup B. O B. The sand in Cup A has greater volume and less mass than the sand in Cup B. C. The sand in Cup A has less volume and greater mass than the sand in Cup B. D. The sand in Cup A has less volume and less mass than the sand in Cup B.

QUESTION 6 Consider a system where a bunch of balloons are attached to a block by a string that rests on a frictionless surface. The balloons that have a mass of m2=50 grams exerts a buoyancy force of Fh = 10N on the block of mass m1 = 5 kg. The string and pulley are massless. a) draw the freebody diagrams for the two masses in the system. b) Sum the forces for block 1. c) Sum the forces for the balloon. m2 d) What is the acceleration of the block? m1

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I want a quick solution, please fast, I don't have enough time Gas guns are used to investigate the properties of materi- als subjected to high-velocity impacts. A projectile is accelerated through the barrel of the gun by gas at high pressure. Assume that the acceleration of the projectile in m/s² is given by a = c/s, where s is the position of the projectile in the barrel in meters and c is a constant that depends on the initial gas pressure behind the projectile. The projectile starts from rest at s = 1.5 m and acceler- ates until it reaches the end of the barrel at s = 3 m. Determine the value of the constant c necessary for the projectile to leave the barrel with a velocity of 200 m/s.

Determine the vertical component, as a function of radius R, of the center of mass of a thin wire shaped like a semicircle as shown in the figure and with constant density. a) 0.637 R b) 0 c) R/2 d) 4.7×10 – 4 R

Example 1 A 40-1b, 0.8-ft-diameter, 1-ft-tall cylindrical tank slides slowly down a ramp with a constant speed of 0.1 ft/s as shown in the figure. The uniform-thickness oil layer on the ramp has a viscosity of 0.2 lb. Determine the angle, 8, of the ramp. 0.002 ft FIGURE P1.48 Tank 0.1 ft/s Oil

Which of the following is the unit for the coefficient of viscosity: Select one: O a. cm/g.s O b. g.s/cm O c. g.cm/s O d. g/cm.s Clear my choice Next poge ge NEXT ACTIVITY

University Physics 1 - Gravitation & Fluid Mechanics I need help with this problem and an explanation of why it is the answer described below:   A glass of water contains floating ice cubes. When the ice melts, does the water level in the glass (a) go up, (b) go down, or (c) remain the same? Explain.

Question 3 Block A has mass M and block B has mass 2M. Let the density of water be denoted by p and the gravitational acceleration constant by g. How much water is displaced? OM/2p OM/p O2M/p O 3M/p O 4M/p A B air Water