Calculate the ratio of the drag force on a jet flying at 885 km/h at an altitude of 8.6 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density of air is 0.46 kg/m³ at 8.6 km and 0.71 kg/m³ at 4.3 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C.
Q: If a box on a horizontal surface has an externally applied horizontal force that exceeds the value…
A: According to Newton's second law F =ma
Q: A student of mass 57.4 kg, starting at rest, slides down a slide 17.2 m long, tilted at an angle of…
A: Calculating the force of kinetic friction:
Q: If a bubble in sparkling water accelerates upward at the rate of 0.225 m/s2 and has a radius of…
A: Given information: Here, a is the bubble’s acceleration in the upward direction, r is the bubble’s…
Q: An 8.00 kg block of steel is at rest on a horizontal table. The coefficient of static friction…
A: Given:- m = 8 kg μs = 0.450
Q: Ed is pushing with a force of 352.9 N at an angle of θ = 56.1 degrees with respect to the vertical…
A: ANSWER :- Since the sofa is not moving the friction is static and equal to the net horizontal force.…
Q: . If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum…
A: Given values : Coefficient of static friction in the dry concrete is 1 Coefficient of kinetic…
Q: The person in Figure P4.55 weighs 170 lb. Each crutch makes an angle of 22.0° with the vertical (as…
A:
Q: The driver of a 1200 kg car steps on the brakes on a dry horizontal concrete roadway. Determine the…
A: Total mass = m= 1200 kg Co efficent of friction = 0.5 Frictional force between each tire= ?
Q: A block is placed on a 10° incline plane. The block has a mass of 150kg. The coefficient of static…
A: Given:- A block of mass m = 150 kg The inclined plane has a 10o angle The coefficient of the…
Q: A box weighing 150 lbs is moved across a horizontal floor by dragging it by means of rope attached…
A: The sum of vertical forces acts on the box is ∑Fy=0N+Fsinθ-W=0 1 The…
Q: Find the magnitude of the tension (in N) in each supporting cable shown below. In each case, the…
A:
Q: Block A, having a mass of 15 kg, is placed on top of block B, having a mass of 30 kg, on a…
A: To find the force applied on block B with the condition of not letting block A slip-on B, the…
Q: Calculate the ratio of the drag force on a jet flying at 1000 km/h at an altitude of 10 km to the…
A:
Q: The coefficient of static friction between Teflon and scrambled eggs is about 0.04.What is the…
A: It is given that,
Q: A 50-kg box is pulled with uniform speed along a horizontal floor by a force parallel to the floor.…
A: Given Mass of the box is m=50 kg Coefficient of friction is μ=0.30 We have to find the magnitude…
Q: Determine the inclination angle O, at which body A (60 kg) may slip upward the inclined surface,…
A:
Q: If the coefficient of kinetic friction, , between the block and the surface is 0.30 and the…
A: We know friction force f =mN where m is coefficient of friction N = normal force = weight of body…
Q: A student of mass 55.4 kg, starting at rest, slides down a slide 24.2 m long, tilted at an angle of…
A:
Q: What is the maximum horizontal force that is required to cause a 15kg box to begin to slide along a…
A: Given that,weight of the box= 15 kgcoefficient of sttic friction=0.26
Q: A box of mass m = 5.00 kg is placed on a ramp with incline 0 = 24.0° and slowly starts to slide…
A:
Q: A pickup truck is carrying a 10.0 kgkg toolbox, but the tailgate of the truck is missing, so the box…
A: Given Mass of the tool box m = 10.0 kg Coefficient of kinetic friction μs = 0.34 Coefficient of…
Q: Determine the minimum horizontal force P required to hold the crate from sliding down the plane. The…
A:
Q: Q.5 An external force F of magnitude F =5N is applied vertically downward on an object of 10 N…
A: Answer (C) n = 15N
Q: The terminal speed of a sky diver is 160 km/h in the spreadeagle position and 310 km/h in the…
A: The expression to determine the ratio of the effective cross-sectional area A between two different…
Q: kinetic
A: Given: Mass of the box, M = 13 Kg Mass of the second box, m = 5 Kg Coefficient of friction between…
Q: Calculate the ratio of the drag force on a jet flying at 878 km/h at an altitude of 9.8 km to the…
A: We know drag force=>D=0.5CρAv2 where C is a constant and ρ is density A is area and v is velocity…
Q: A 100-kg block is moved at a constant speed along the horizontal surface by a force inclined above…
A:
Q: After emergencies with major blood loss, a patient is placed in the Trendelenburg position, in which…
A:
Q: Block A in Fig. P5.72 weighs 60.0 N. The coefficient of static friction between the block and the…
A: Given: Weight of block A is 60.0 N. The coefficient of static friction between the block and the…
Q: Estimate the terminal speed of a wooden sphere (density 0.830 g/cm3) falling through air, if its…
A: Given : Density of a wooden sphere (ρ) = 0.830 g/cm3 = 830 kg/m3 Radius (r) = 8.00 cm = 0.08 m Drag…
Q: 1.24 The total aerodynamic force F acting on the airplane has a magnitude of 6250 lb. Resolve this…
A: Magnitude of aerodynamic force (F) = 6250 lb Angle made with the vertical = 6 degree
Q: A 4.0 kg block is on the verge of sliding down an inclined plane with a θ-degree angle of incline.…
A:
Q: A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static…
A: Given that, The coefficient of static friction between the sled and the ground μs=0.603 Kinetic…
Q: The coefficient of static friction between Teflon and scrambled egg is about 0.04. What is the…
A:
Q: Problem attached below. Thanks for your help
A: The horizontal force F can be resolved in to two components, Fsin(theta), and Fcos(theta). In…
Q: The terminal velocity of a person falling in air depends upon the weight and the area of the person…
A: Given value--- mass = 75.5 kg. surface area = 0.170 m2 . density of air= 1.21 kg/m2 . coefficient…
Q: In a television commercial, a small, spherical bead of mass 4.00 g is released from rest at t = 0 in…
A: Given values: Mass of the bead ,m=4.00 g Terminal speed, vT=2.00 cm/s Acceleration due to gravity,…
Q: The terminal speed of a sky diver is 140 km/h in the spread-eagle position and 346 km/h in the…
A: Given: The terminal speed of a skydiver in spread-eagle is 140 km/h. The terminal speed of a…
Q: Two boxes of mass m, =3.9 kg and m,=2.3 kg are made of different materials. The boxes in contact are…
A: Given data The mass of the first box is m1 = 3.9 kg. The mass of the second box is m2 = 2.3 kg. The…
Q: What would be the maximum weight of the crate so that the box does not slide if the coeffietint of…
A:
Q: What is the maximum value the string tension can have before the can slips? The coefficient of…
A:
Q: A box of mass ?= 5.00 kg is at rest on a horizontal rough surface. The coefficients of static…
A: Given: Mass of box m=5 kg Static friction coefficient μs=0.450 Kinetic friction coefficient μk=0.400
Q: Assume that the pulleys are frictionless, but the horizontal surface is rough with a coefficient of…
A:
Q: Calculate the ratio of the drag force on a jet flying at 1020 km/h at an altitude of 9.5 km to the…
A: Write the given values using a suitable variable. Here v1 signifies velocity at 9.5 km, p1…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Calculate the ratio of the drag force on a jet flying at 949 km/h at an altitude of 9.2 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density of air is 0.43 kg/m³ at 9.2 km and 0.69 kg/m³ at 4.6 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C. Number i UnitsCalculate the ratio of the drag force on a jet flying at 1000 km/h at an altitude of 10 km to the drag force on a propdriven transport flying at half that speed and altitude. The density of air is 0.38 kg/m3 at 10 km and 0.67 kg/m3 at 5.0 km.Assume that the airplanes have the same effective cross-sectional area and drag coefficient C.Calculate the ratio of the drag force on a jet flying at 900 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at one-fifth the speed and half the altitude of the jet. The density of air is 0.38 kg/m3 at 10 km and 0.67 kg/m3 at 5.0 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C. (drag on jet/drag on transport) =
- Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 19 minutes. The density of air is 1.20 kg/m3 Determine the drag force on the runner during the race. Suppose that the runner has the cross section area of 0.72 m2 and the drag coefficient of 1.2. What is this force as a fraction of the runner's weight?A car has a drag coefficient Cd kg.m-3. = 0.30, a frontal area of A= 1.9 m² and a mass 1.2 tonnes. The density of air is 1.2 i) What is the drag force when it is traveling at v = 110 kph in a straight line? Fdrag N. Hint: Retain accurate values until the final calculation, but remember significant figures. Enter answer here= A vehicle travels with a speed of 80 km per h, with a drag coefficient of 0.25. If the cross-sectional area is 6 square meters, then find out the drag force.
- Problem-solving questions At the back of the leg, two muscles pull on the Achilles tendon to create an upward force. Estimate the nett force if cach muscle has a diameter of about 5.0 mm and exerts a force in a direction of 25° from the vertical. (Use a force per unit area of muscle of 7x10° N/m²). An 18 kg penguin slides down an iceberg at an angle of 15° to the horizontal. Friction between the penguin's body and the ice surface is negligible. Determine the normal force acting on the penguin and its acceleration down the iceberg. A manufacturer of children's slides does some tests and discovers that the slope of a slippery slide must be at least 25° to the horizontal for the slide to work. The child involved in doing the testing weighs 35 kg. What is the coefficient of static friction between the child and the slide? A car drives onto a section of the road which is covered in ice. The driver attempts to stop by hitting the brakes but the wheels lock and the car skids for another 60 m.…The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. Find the terminal velocity (in m/s) of a(n) 60-kg skydiver falling in a pike (headfirst) position with a surface area of 0.246 m². The drag coefficient for this position can be taken as 0.606. Refer to the textbook for the proper expression for terminal velocity.It is autumn. You look outside a window and see a maple leaf falling face down, in a straight vertical line. You estimate the speed of the leaf to be 25.77 cm/s. You then pick up the leaf and do measurements. It has a mass of 2.76 g and a cross sectional area of 76 square cm. You measure the density of air to be 1.298 kg m-³. What is the drag coefficient between the leaf and the air? (numerical value only) Number (Hint: For an object to fall with constant speed, it must be at 'terminal velocity'.)
- A sled of mass 500kg sits at rest on a rough slope that is inclined at 10* to the horizontal. The coefficient of friction between the slope and the sled is 0.3. The sled is held in place by a wire attached to a winch. The tension in the wire is TN. a) Find the maximum possible value of T. A load of mass mkg is added to the sled, and tension in the wire is increased to 5000N in order to pull the sled and load up the slop. Given that the sled and load are pulled a distance of 100m in 80seconds, b) Work out the value of mHelp me pleaseTo maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). The density of air is 1.2 kg/m. (a) What are the drag forces in newtons at 75 km/h and 104 km/h for a Toyota Camry? (Drag area = 0.70 m? and drag coefficient = 0.28.) at 75 km/h at 104 km/h (b) What are the drag forces in newtons at 75 km/h and at 104 km/h for a Hummer H2? (Drag area = 2.44 m2 and drag coefficient = 0.57.) at 75 km/h at 104 km/h N Additional Materials