A dc motor with its rotor and field coils connected in series has an internal resistance of 3.2 Q. When the motor is running at full load on a 120 V line, the emf in the rotor is 105 V. What is the current drawn by the motor from the line?

Q: An archer puts a 0.4 kg arrow to the bow- string. An average force of 214.3 N is exerted to draw the…

A: Given data The mass of the arrow is given as m = 0.4 kg. The force applied on the string is given…

Q: If two vectors have the unequal magnitude, can their resultant be equal to zero?

A: The only way two vectors can have a resultant of zero is if they are anti-parallel vectors of equal…

Q: The muzzle velocity of the bug guns on a battleship is 850 m/s when firing a certain mass shell.  If…

A: Assume a shell is fired from a bug gun at an angle θ = 40 ̊ with the horizontal. The initial…

Q: If the value of g changes how does it affect the path of projectile?

A: The gravity affects only the vertical component of velocity.

Q: Explain why a projectile released at an angle of 60 0and 30 0 both travel the same range

A: Let a projectile be launched with an initial velocity = u Let the same projectile is thrown at two…

Q: Which of the following are vectors? Select all that apply. O position O force O velocity mass

A: Scalar quantity: It is a physical quantity which has only magnitude not direction. Example, mass,…

Q: football kickedfrom 63 yards away from goalpost that is 10 feet above the ground. If the initial…

A: A football is projected with a velocity of 15 m/s at an angle of 45° from a height of 10 feet above…

Q: If a car is moving at 90 km/h and it rounds a corner, also at 90 km/h, does it maintain a constant…

A: Speed is a scalar quantity. It has magnitude only, no any direction. Constant speed does not always…

Q: (c) velocity when her feet hit the water v= 6.98 m/s. It says that this isnt right .

A:

Q: What is the result of subtracting vectors with conditions of 300 m South from 200 m East

A: Solution: Consider the orientation of the given problem, as shown below:…

Q: diver leaves the 10.00m tower with a velocity of 0.500m/s and 6.00m/s assume that her height at…

A:

Q: The direction of the acceleration vector is the same as the direction of the velocity the…

A: Let the initial velocity vector = u→Let the final velocity vector = v→Let the time taken = t

Q: how far will a ball be kicked if it is kicked at 7m/s at an angle of 22 and is in the air for 11…

A: Given data: Speed of the ball (v) = 7 m/s Angle of projectile θ=22° Time of flight (t) = 11 sec…

Q: If the acceleration of an object is zero then its speed must be...zero?

A: Acceleration of an object represents the rate which velocity of the object is changing.If a body is…

Q: Add the following two force vectors by any method: 30 pounds at 30degrees and 20 pounds at 140…

A:

Q: 45-50. Add the 3 vectors: 121° F₁ = ISON 76° stardlop. v ter (not 132° F = 300 N F₂ = 200N

A:

Q: with an airspeed of 40 km/h in a 30 km/h crosswind (at right angles) has a groundspeed of?

A: Airplane speed in north = 40km/hrWindspeed = 30km/hr right angle

Q: A wheelchair moves upwards on a 7.1 degree ramp at a speed of 20km/h. What is the horizontal…

A: Given that, The speed of a wheelchair = 20 km/h The angle of the ramp with the ground = 7.1 degree…

Q: child kicks a ball with an inital velocity of 8.5 m/s at an angle of 35 witht the horizontal as…

A:

Q: A clerk accelerates a crate of Oreo cookies, with a mass, m, down an aisle with a frictionless…

A: Consider the case when the box pulled at an upward angle and draw the free body diagram

Q: A stone is projected upward with a velocity of 15 m/s at an angle of 30o with the horizontal ground.…

A: When projectile is projected with a velocity u at an angle θ then the horizontal distance or range…

Q: A projectile fired at an angle of 60◦ lands 400 m away. What was its initial speed?

A: Range of projectile is given by,  R=u2sin2θg

Q: If the ball is fired horizontally the time of travel doesn't depend on its speed.

A: Assume a ball is fired horiontally at certain speed.

Q: When will a stone thrown vertically upward at 10 m/s reach the ground?

A:

Q: Calculate its height after 3 sec.

A: Given data,  Calculate its height after 3 sec?  Where,   Speed of the iron ball vertically upward…

Q: An object In a projectile motion will follow which path? Curved up from the ground Curved down from…

A: An object in projectile motion follows parabolic path.

Q: a boat leaves a dock at 2:00 p.m., heading west at 15 km/h. Another boat heads south at 12 km/h and…

A:

Q: Is the velocity vector always in the direction of motion?  If say a car is moving to the right and…

A: Velocity of a moving body is the change in position with time. If a car moves in a particular…

Q: A baseball leaves a bat at 40 m/s at an angle of 30 degrees.  What are the horizontal and vertical…

A: The velocity of a ball when it leaves the bat is, v=40 m/s The angle of the ball projected from the…

Q: In each case, find the x- and y-components of vector : (a) A = 3.202 +6.50ĵ; (b) A 18.2ĵ-7.91î; (c)…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: If you throw an object upwards What’s the direction of its velocity and of its acceleration while it…

A: When the object goes up, the velocity will be directed in the upward direction. When the object goes…

Q: what is the distance a squirrel can jump when running 3m/s and jumping at an angle of 55 degrees?

A:

Q: A stone thrown horizontally with a spewed of 22m/s from the top of a should I call Cliff at the edge…

A: Given : Initial vertical speed of the stone=0 Initial horizontal speed of the stone, v=22 m/s Time…

Q: 1. A 75.0 cm diameter high-speed flywheel in an electric motor is rotating when a power failure…

A: Diameter = 75cm Radius (r)= 37.5cm= 0.375m Tangential velocity = 19.5- 0.263t

Q: Use dimensional analysis (Section 1–8) to obtain the formfor the centripetal acceleration, aR = v2/r

A:

Q: An apple falls from the very top of a large apple tree at 9.81 m/s squared it hits the ground three…

A: Acceleration, a = 9.8 m/s²Time, t = 3 s

Q: A brick is thrown at an angle of 30 degrees relative to the horizontal direction. If its horizontal…

A: Given Angle of projection is given as θ=30° Horizontal speed of the brick is ux=10 m/s   We have to…