A boat is angled 38 degrees to the direction of a stream moving at 12.3 m/s parallel to the steam banks. The motor of the boat provides a speed of 8m/s. Calculate the direction the boat travels.

Q: What is the maximum velocity at which a 25 W motor can lift an 8.5 kg object upward

A: Given that:- P=25 Wm=8.5 kgg=9.8 m/s2V=?   Since, P=mgV

Q: (a) Find the kinetic energy of a bullet of mass 5.00 g traveling at a speed of 295 m/s. (b)…

A: A)Mass of bullet (m) = 5 g velocity of bullet (v) = 295 m/s

Q: Robin Hood pulls the string of his bow backwards 0.6 m with a force of 170 N. The mass of the arrow…

A: We know work done(W) = change in kinetic energy. Here the final speed of arrow is zero. let the…

Q: A 15 g bullet traveling parallel to an inclined ramp strikes a 2.74 kg block of wood and becomes…

A:

Q: Under normal conditions the human heart converts about 12.4 J of chemical energy per second into…

A: (a) As 1 kilocalorie = 4186 J. Therefore, 1 cal = 4.186 J.  The energy in calorie used per second…

Q: The figure to the right shows a pool slide of length 5.50 m. The end point of the slide is at 30.0…

A: Length of pool slide = 5.50 m height of end point of slide above water level = 30 cm mass of child =…

Q: Air moves through a wind turbine with radius 13 m at a uniform speed of 10.9 m/s. The density of the…

A: Radius of wind turbine,Speed,Density of air,To find that how much power is generated?

Q: An electric motor of a model train moves the train at a constant velocity of 2m/s for 21.0 seconds.…

A: Given data:  Velocity (v) = 2 m/s Time (t) = 21.0 s Force (F) = 2.5 N Required: The average power…

Q: The electric motor of a model train accelerates the train from rest to 0.720 m/s in 25.0 ms. The…

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Q: A car with mass of 1087 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. The…

A: Average mechanical power output of the engine is equal to the change in the kinetic energy of the…

Q: If a water motor fills 25 kg of water in a pool of 60 m in 5 minutes, what is the power of the…

A: The pump fills a pool of height h=60 m with water of mass m=25 kg in t=5 min=300 s.The potential…

Q: A boat weighing m = 2.5 t develops a maximum speed of vmax = 30 m / s. After turning off the engines…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.600 m/s in 35.0 ms. The…

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Q: An elevator has mass 775 kg, not including passengers. The elevator is designed to ascend, at…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.502 m/s in 20.0 ms. The…

A: mass of model train (m) = 825 g  = 0.825 kg initial velocity (u) = 0 msfinal velocity (v) = 0.502…

Q: A 62.0 kg woman runs up a flight of stairs having a rise of 4.28 m in a time of 4.20 s. What average…

A: Given data: Mass (m) = 62 kgHeight (h) = 4.28 mTime (t) = 4.20sRequired:The average power (P)

Q: Calculate the kinetic energy of a 10 g bullet travelling at a velocity of 2500 km/h.

A: Given data:  Mass (m) = 10 g = 0.010 kg Velocity (v) = 2500 km/h Required: The kinetic energy (KE)

Q: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body…

A:

Q: Olivia fires an arrow at a bird sitting 20m up in a tree. The arrow has a mass of 0.010 kg and…

A: Given height of the bird from the ground = 20m  mass of an arrow = m = 0.010 kg  initial bow speed =…

Q: A vehicle is travelling at 20.0m/s steadily. If the engine provides 7.8x10 W consistently, what is…

A: Given, speed v = 20.0 m/s            power P = 7.8 × 104 W            resistive force Fr = ? In…

Q: A 31.0 kW electric motor drives a vehicle at an average velocity of 9.20 m/s.  Assuming a constant…

A: Given data: Power (P) = 31.0 kW Velocity (v) = 9.20 m/s Required: Force (F)

Q: A car accelerates from 0 to 38.3 m/s in 3.67 s. The mass of the car is 1.02e+03 kg. (a) What is the…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.540 m/s in 17.0 ms. The…

A: Given that Initial velocity (u)= 0 m/s (Since initially the train was at rest) Final velocity (v)=…

Q: When its engine of power 76 kWkW is generating full power, a small single-engine airplane with mass…

A: Given:               Engine Power , P = 76 kW = 76×103W                                mass  M= 710…

Q: A 15.0-g bullet is accelerated from rest to a speed of 780 m/s in a rifle barrel of length 72.0 cm.…

A:

Q: A steam engines raises a 1800 kg mass vertically at the rate of 9 m/s. What is the power of the…

A: mass raised (m) = 1800 kg velocity (v) = 9 m/s efficiency = 70 %

Q: A table saw—powered by an electric motor—was measured to consume 0.2 kilowatt hours (kW·h) of…

A:

Q: You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the…

A: According to question --- Given that-- Distance = 1.1 m. time = 1.3 sec. power = 90 W. We have to…

Q: The total mass of the model train is 500 g. The electri motor of a model train accelerates the train…

A:

Q: a 75.8 kg person runs up a flight of stairs having a rise of 5.3 m in a time of 4.5 s. What average…

A: Given data: Mass (m) = 75.8 kg Height (h) = 5.3 m Time (t) = 4.5 s Required: The average power (P)

Q: The power needed to accelerate a projectile from rest to its launch speed v in a time t is 51.4 W.…

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Q: A 5-kg projectile is fired over level ground with a velocity of 200 m/s at an angle of 25°above the…

A:

Q: 18. What is the average power developed by a motor as it lifts a 400.-kilogram mass at a constant…

A:

Q: A motor boat moves at a steady speed of 6 m/s. Water - resistance acting on it is 4370 N. Calculate…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.810 m/s in 20.5 ms. The…

A:

Q: When an automobile moves with constant speed down a highway, most of the power developeu Dy the the…

A: GIVEN:A car moving down a highway with a speed of 25m/s and has a 205 horsepower engine. 1hp=746W…

Q: Body of mass a Calculate the KINETIC Energy of 264 moving with the velocity of 10 m/s.

A: Mass = 2 kgVelocity = 10 m/s