A 70-kg bicyclist is riding her 15-kg bicycle downhill on a road with a slope of 8° without pedaling or braking. The bicyclist has a frontal area of 0.45 m2 and a drag coefficient of 1.1 in the upright position, and a frontal area of 0.4 m2 and a drag coefficient of 0.9 in the racing position. Disregarding the rolling resistance and friction at the bearings, determine the terminal velocity of the bicyclist for both positions. Take the air density to be 1.25 kg/m3.

Q: Problem 70. A group of three skiers stand atop a hill inclined at a steady angle of 8°. One skier…

A: Given, θ=80μK1=0μK2=0.04μK3=0.1H=200 m

Q: Simulate projectile motion with air resistance in PhysLab. A shuttlecock is launched from the ground…

A:

Q: A spherical raindrop of mass 0.0128 g and radius 1.45 mm falls from a cloud that is at a height of…

A: The expression for terminal speed is vt=2mgCρA=2mgCρπr2 Substitute vt=20.0128×10-3 kg9.81 ms20.61.3…

Q: A skateboarder is attempting to make a circular arc of radius r = 19 m in a parking lot. The total…

A: Draw the free-body diagram of the skateboard. The diagram consists of the radial force only since…

Q: Block A in the figure has mass mA = 4.10 kg, and block B has mass mg = 2.20 kg. The coefficient of…

A: mA  = 4.10 kg mB = 2.20 kg μk = 0.52θ = 32o

Q: Block A in the figure has mass ma-4.10 kg, and block B has mass me-2.00 kg. The coefficient of…

A: It is given that, the mass of block A is, mA=4.10 kg the mass of block B is, mB=2.00 kg the…

Q: The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight…

A: The weight of the helicopter is W=43900 N Angle of inclination is θ=21.0° Let vx be the constant…

Q: A student of physics is carrying a heavy wooden crate. Being educated about friction, this student…

A: Draw the free-body diagram of the crate.

Q: n the figure, a 1.15 kg ball is connected by means of two massless strings, each of length L = 1.69…

A: Given: The mass of the ball is 1.15 kg. The tension in the upper string is 54 N. L=1.69 md=1.69 m…

Q: A child is playing on a hill with a cardboard box. The combined mass of child and box is ? = 120 kg.…

A: Combined mass of child and the box is m = 120 kg Coefficient of static friction is μs=0.4…

Q: To assess a patient who is suspected of having heart disease, the physician must examine the cardiac…

A:

Q: Simulate projectile motion with air resistance. A shuttlecock is launched from the ground with an…

A: Given The initial speed of the shuttlecock is vi = 39.1416 m/s. The drag coefficient is Cd = 0.2891.…

Q: A sailor is being rescued using a boatswains chair that is suspended from a pulley that can roll…

A: A sailor is being rescued using a boatswains chair which is suspended from a pulleyAngle   α= 250…

Q: (COLLAB) Simulate projectile motion with air resistance in PhysLab. A shuttlecock is launched from…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: In an old-fashioned amusement park ride, passengers stand inside a 4.50 m diameter hollow steel…

A:

Q: A coin is placed 34 cm from the center of a horizontal turntable, initially at rest. The turntable…

A: The coin wouldn't slip unless the centrifugal force experienced by it becomes equal to the…

Q: A 902 kg automobile is moving at a maximum speed of 37 m/s on a level circular track of radius 216…

A:

Q: Spherical proteins of an unknown radius have a density of 5.80 x 103 kg/m3 and are suspended in…

A: Given:-            Density of protein (ρprotein) = 5.8×103 kg/m3            Radius of centrifuge (R)…

Q: A raindrop with radius R= 1.6 mm falls from a cloud that is at height h = 1200 m above the ground.…

A: Given: The radius of the drop is 1.6 mm. The height of the cloud is 1200 m. The density of water is…

Q: The designer of a ski resort wishes to have a portion of a beginner’s slope on which the skiers…

A:

Q: Spherical proteins of an unknown radius have a density of 6.60 x 103 kg /m3 and are suspended in…

A: The density of protein The radius of centrifuge The angular velocity of centrifuge The terminal…

Q: An object with mass (M1= 8 Kg) rests on a rough horizontal table and is connected by a cable that…

A:

Q: A skateboarder is attempting to make a circular arc of radius r = 11 m in a parking lot. The total…

A: When the skater slides there is only kinetic friction accelerating him radially.

Q: In the figure, a 1.32 kg ball is connected by means of two massless strings, each of length L = 1.72…

A:

Q: In an old-fashioned amusement park ride, passengers stand inside a 4.6-m-diameter hollow steel…

A: Given: diameter of the cylinder, d=4.6 m co-efficient of static friction range, μs=0.60-1.0…

Q: Mass m, = 13.7 kg is on a horizontal surface. Mass m, = 7.49 kg hangs freely on a rope which is…

A:

Q: In deep space, an astronaut is whipping a heavy tool around in a circle by a taut cable. The cable…

A:

Q: a swing ride at a carnival consists of chairs that are swung in a circle by 14.4m cables attached to…

A:

Q: A plastic disc is flicked up a sloping board. It has an initial speed of 1.6 ms¹, but gradually…

A:

Q: horizontal circumference at a speed of 500 km / h. The wings form an angle of 35 ° to the…

A: We know that we have given that let An airplane flies in a horizontal circumference at a speed of v…

Q: s shown in the figure, there is an infinitely long flat conductor piece of width a and regardless of…

A:

Q: the magnitude and direction of the acceleration of each block, b)   the tension in the cord?

A: In x-direction,m1gsinθ-T=m1ax                                       ....(i)T-m2g=m2ax…

Q: A toy aireraft (without an engine) is attached to the end of a 20 em long weightless cable. A person…

A:

Q: Block A in the figure has mass ma = 4.30 kg, and block B has mass mg = 2.20 kg. The coefficient of…

A:

Q: A car is driving along a circular track with diameter d = 0.59km at a constant speed of v = 21.2…

A: Dimatere of circular track is Speed of vehicle is Note:Gravitational acceleration is Find:The…

Q: Two wooden blocks of masses m1 = 2.0 kg and m2 = 3.0 kg, are joined by an inextensible rope as shown…

A: Given Block 1 has mass m1=2.0kg Block 2 has mass m2=3.0kg Block 1 moving with acceleration a=3 m/s²…

Q: In the figure, a 1.70 kg ball is connected by means of two massless strings, each of length L = 1.13…

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.