Newton's 2nd Law

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.

SCIENCE • PHYSICS A lmm diameter glass bread is dropped into a cylinder of oil at room temperature. It falls 25 cm to the bottom in 60s at constant speed. The glass and oil have densities of 2500 kg/m^3 and 900 kg/m^3, respectively. A. What is the mass of the bead? B. What is the viscosity of the oil? C. Would you expect the time fall to increase, decrease, or remain the same if the oil was heated up first?

Main Menu Contents Grades Course Contents » Problem Set #7 (due Mon 11/14) » Water jet Timer Notes Evaluate A jet of water squirts out horizontally from a hole near the bottom of the tank, as seen in the figure. 200 у X Assume that x = 1.36 m and y = 1.84 m. What is the speed of the water coming out of the hole? 2.22 m/s You are correct. Your receipt no. is 157-8046 Previous Tries If the hole has a diameter of 3.18 mm, then what is the height, h, of the water level in the tank? .2446m Submit Answer Incorrect. Tries 1/12 Previous Tries Post Discussion Feedback Print Send Feedback

Race car down force. Modern race cars come with a variety of airfoils to help hold them on the track, especially in flat turns where the cars tend to slide out of the turn. Another technique involves channeling air through an opening in the front of the car, down under the car's body, and then out behind the car. The air effectively flows through a pipe that is narrow in one section (the space below the car). Suppose the front opening has area A+ - 0.75 m² and the space between the track and the bottom of the car has an area of Ab - 0.15 m². If the car is moving at speed v-240 km/h and the pressure above the car is 1.0 atm, approximately what is the pressure difference (in atmospheres) between the top and bottom of the car, pushing down on the car? Number i Units

Required information A light aircraft flies at 31.5 m/s in air at 20°C and 1 atm. Its wing is an NACA 0009 airfoil, with a chord length of 150 cm and a very wide span (neglect aspect ratio effects). Estimate the drag of this wing per unit span length by flat plate theory. N/m

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Phys View Available Hint(s) A student hits the cork sharply with her fist and the bottom of the bottle breaks. The student's fist has a mass of m 0.480 kg and moves downward at a speed of v = 5.00 m/s. It collides elastically with the cork and rebounds with the same speed. The collision lasts for t = 1.20x10-4s. In this problem, the positive direction is upward. -4.00x104 N Submit Previous Answers All attempts used; correct answer displayed Part B What is the magnitude of the force exerted on the bottom of the bottle? Express your answer in newtons to three significant figures. Figure < 1 of 1 • View Available Hint(s) Diameter of the top = 2.0 cm Πνα ΑΣ φ ? Cork N Submit Part C Complete previous part(s) Water, filled to the cork Diameter of the bottom = 6.5 cm Provide Feedback MacBook Air DII DD 80 F3 88 esc F10 F2 F4 F5 F6 F7 FB F9 F1 @ # 2$ % & 3 7 8. 9

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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Question 3 Systemic blood pressure is expressed as the ratio of the systolic pressure (when the heart fırst ejects blood into the arteries) to the diastolic pressure (when the heart is relaxed). Normal systemic blood pressure is 20. What is the maximum force (in 80 newtons) that the blood exerts against each square centimeter of the heart for a person with normal blood pressure?

Cut off says front wall of burning building had a high pressure hose used on it

Water travels through a pipe at 4 m/s. The pipe changes from a radius of 0.75 m to a radius of 0.25 m. What is the area of the 0.75 m radius pipe? m2 Submit Answer Tries 0/2 What is the area of the 0.25 m pipe? m2 Submit Answer Tries 0/2 What is the velocity of the water after the pipe has changed radii? m/s Submit Answer Tries 0/2 How does the pressure change from the 0.75 m pipe to the 0.25 m pipe? Enter a positive number if the pressure increases, a negative number if it decreases. Pa

Race car down force. Modern race cars come with a variety of airfoils to help hold them on the track, especially in flat turns where the cars tend to slide out of the turn. Another technique involves channeling air through an opening in the front of the car, down under the car's body, and then out behind the car. The air effectively flows through a pipe that is narrow in one section (the space below the car). Suppose the front opening has area A₁ = 0.75 m² and the space between the track and the bottom of the car has an area of A₁, = 0.15 m². If the car is moving at speed v = 240 km/h and the pressure above the car is 1.0 atm, approximately what is the pressure difference (in atmospheres) between the top and bottom of the car, pushing down on the car?

P-7 Please I need help with this question needed very clearly and step by step explanation and NEEDED ONLY TYPED SOLUTIONS PLEASE NO HANDWRITTEN please, will be really appreciated for your help. NEEDED ONLY TYPED SOLUTIONS NEEDED ONLY PROBLEM 66

Saved Check my work mode : This shows what is correct or incorrect for the work you have completed so for. It The average density of a fish can be found by first weighing it in air and then finding the scale reading for the fish completely immersed in water and suspended from a scale. If a fish has weight 199.0 N in air and scale reading 14.70 N in water, what is the average density of the fish? Density of water is 1.00 103 kg/m. 1124.498 O kg/m

p-6 Please I need help with this question needed very clearly and step by step explanation and NEEDED ONLY TYPED SOLUTIONS PLEASE NO HANDWRITTEN please, will be really appreciated for your help. NEEDED ONLY TYPED SOLUTIONS.

SCIENCE • PHYSICS A ship constructed of 2.5*10^6 kg of steel is shaped like a box of length 50 m, width 20 m, and height 20m. A. What is the mass density of the ship? B. What is the maximum cargo mass the ship can carry without sinking?

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.

Fluid Mechanics II

A 6.5-cm-diameter ball has a terminal speed of 20 m/s. You may want to review (Pages 146 - 147) Part A What is the ball's mass? Use p = 1.2 kg/m³ for the density of air at room temperature. Express your answer with the appropriate units. m = Submit μA Value Request Answer Units ?

MULTIPLE CHOICE Question 10 What is the magnitude of the net force on this object? 8.3 N 13.7 N A 110 N O O O All C tal Questions Answered 40°F Cloudy DELL prt sc

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Hi I needed help with this: You have an aquarium which holds 9.45 gallons of water and you would like to place it on an antique stand. Before placing the aquarium on the stand, as a precaution, you decide to determine the weight of the water in the aquarium. Determine the weight of water you will be placing in the aquarium.

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

Current Attempt in Progress An airplane has an effective wing surface area of 22.4 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 65.0 m/s, while the air speed beneath the wings is 51.0 m/s. What is the weight of the plane? Number i Units

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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.