1. What is the principle type of drag experienced by a skydiver when theirparachute has been opened?2.What is an orifice plate used to measure?3. A hot cup of coffee is cooling by transferring its heat into a room. What cansaid about the entropy of the room?4.What term is used to describe a thermodynamic process where there is nochange in volume between the start and end?5.What does the symbol Q represent and what are its units?6.In the equation pV = mRT, what does the symbol R represent?7.What is the principle heat transfer medium for convection?8.As a fluid passes through a diffuser, the cross sectional area increases. Whateffect does this have on its velocity if the mass flow rate and density remainconstant?9. What is the critical Reynolds number for internal flow?10. The Steady Flow Energy Equation (SFEE), as shown below, embodies threeforms of energy. Name the three forms of energy.zpvín + Pin + Pgzin =5pvout + Pout + Pgzout11. Sketch a p-v diagram for a fluid and indicate a point where the state of the fluidwould be saturated vapour.12. Hot water flowing through a heating pipe has a Reynolds number of 6,500.What does this indicate?13. What law does a polytropic process obey?

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1. What is the principle type of drag experienced by a skydiver when their parachute has been opened?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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2. You are moving the box (m=1Okg) across a rough floor by pushing on it at an angle of 20° below the horizontal with force of magnitude F=100N. What is the coefficient of kinetic friction between the box and the floor if it is moving at constant velocity? Present free-body diagram. 10°
2. ) Two blocks of masses m, = m2 = 1.0 kg are at rest on the inclined plane as shown in the figure. Both blocks are made up of different materials such that the coefficient of 3.0 kg and m2 m1 static friction between the surfaces of block m, and incline plane is 0.7, while the coefficient of static friction between the surfaces of block m, and incline plane is 0.5. Answer the following questions. 30° a. Draw a free-body force diagram for the mass m (Remember: the free-body force diagram should be drawn without the body and on XY coordinate axes, where the positive X-axis is downward along the inclined plane)(Show all forces and level the name of the forces clearly) b. Write down Newton's second Law for mass m, along X-axis (Hint: Simply expand the summation in the equation EF, = m,a to include all forces. No calculation is required) С. Find the maximum possible static friction force on mass m.. d. Determine the magnitude of the interaction force between blocks m, and m2. (show all…
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Problem Find the particle's horizontal position x(t) and velocity v(x) at any point in a fluid whose drag force is expressed as Fdrag = kmv where, k is a constant, m is the mass of the particle and v is its velocity. Consider that the particle is initially traveling with a velocity v0. Solution: a) To solve for the position as a function of time x(t), we construct the net force in the x-axis as ∑F = -F_____ = m_____ Then: -m_____v = m_____ since: a = dv/dt then -m_____v = m_____ by integrating, we obtain the following expression: _____ = v0e_____ Further, employing the rules of integration results to the following expression for position as a function of time x= (v0/_____)( _____ - e _____ ) as t -> ∞ , the position becomes x = v0/k b) To solve for the velocity as a function of position v(x), we construct the net force in the x-axis as follows ∑F = -F _____= m_____ Then: -m_____v = m_____ since: a = dv/dt then -m_____v = m_____ We can eliminate time by expressing, the velocity…
10:54 PM e 97 p6 - Saved 1. The figure below represents a cart viewed from above being pulled by two children and experiencing a friction force. Determine the net/resultant force on the sled by graphical method using a scale factor 1.0 cm : 4.0 N. F1 = 8 N 300 Cart f= 6 N 450 F2 = 10 N 2. You take a three-day hike. On the first day, you travel 5.0 km heading east. On the second you enjoyed the scenery so much you forgot to take note how far you have walked and in what direction. On the third day, after wandering for 8.5 km and in the direction 370 south of west, you found yourself in the base camp. Determine your displacement during the second day of your trip. Use the scale 1.0 cm : 2.0 km. 3. A father pulls his child on a sled by pulling on a rope over his shoulder with a force as much as 75 N directed along the rope that makes an angle of 30° with the ground. The icy ground exerts about 15 N friction force on the sled. The combined weight of the sled and the child is about 180 N.…
4. The Trendelenburg Position. In emergencies with major blood loss, the doctor will order the patient placed in the Trendelenburg position, in which the foot of the bed is raised to get maximum blood flow to the brain. If the coefficient of static friction between the typical patient and the bedsheets is 1.20, what is the maximum angle at which the bed can be tilted with respect to the floor before the patient begins to slide? Consider that the mass = 1.5 kg 5. Consider the shown in the figure below. Block A weighs 45.0 N and block B weighs 25.0 N. Once block B is set into downward motion, it descends at a constant speed. (a) Calculate the coefficient of kinetic friction between block A and the tabletop. (b) A cat, also of weight 45.0 N, falls asleep on top of block A. If block B is now set into downward motion, what is its acceleration (magnitude and direction)? m₁ P 6. In the figure below. m₁ = 20.0kg and a = 53.1º. The coefficient of kinetic friction between the block and the…
Three objects move through the air as shown. Rank in order, from largest to smallest, the three drag forces D1, D2, and D3. Some may be equal. Give your answer in the form A < B = C and state your reasoning.
A2 kg box is attached to a 4 kg box on a horizontal surface as shown. A 80 N force acts on it at an angle of 30 degrees with the horizontal as shown in Figure. If the kinetic friction between the objects and the surface is 0.44, calculate the acceleration of the boxes and the tension in the string joining the two are then: 4 30°
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