Suppose a motor connected to a 115 V source draws 19.0 A when it first starts. a) What is its resistance (in Ω)? b) What current (in A) does it draw at its normal operating speed when it develops a 100 V back emf?

Q: If a coil of wire in a magnetic field rotates 60 degrees, it provides an emf averaging 3.0 V. If the…

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Q: Determine the energy required to accelerate a 1,155-kg car from 10 to 60 km/h on an uphill road with…

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Q: 56. A block of mass m slides down a frictionless track, then around the inside of a circular…

A: Mass of block = m Radius of loop = R  We need to find the minimum height = h=?

Q: (Figure 1) shows your 1.5 kg laptop computer being dragged up a 25° slope at steady speed by a rope…

A: The objective of the question is to define the system for a problem involving thermal energy and to…

Q: The coill in the figure carries current i-156 A in the direction indicated, is parallel to an xz…

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Q: Between 0°C and 30°C, the volume V ( in cubic centimeters) of 1 kg of water at a temperature T is…

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Q: 15. A Hooke's Law spring is compressed 15.0 cm by an applied force of 200.0 N. This compressed…

A: Using the law of conservation of energy,"the spring potential energy stored in the spring due to…

Q: A skier of mass 115 kg travels down a ski trail. Suppose the ski trail is not frictionless. (a) If…

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Q: 2.) A spinning, flat disk of radius 2.0 m has a tangential velocity at its edge of 4.5 m/s. a.…

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Q: An AM radio station broadcasts at 1010 kHz, and its FM partner broadcasts at 98.3 MHz. Calculate and…

A: Frequency of the AM radio station, f = 1010 kHzFrequency of the FM radio station, f = 98.3 MHz

Q: A 96-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350…

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Q: In the figure, two concentric circular loops of wire carrying current in the same direction lie in…

A: The formula for the magnetic field produced by a current-carrying loop at its center:where: is the…

Q: A spring has an unstretched length of 10 cm. It exerts a restoring force F when stretched to a…

A: The stretching and compressing of the spring is governed by Hooke's law, where 'k' is the spring…

Q: A skier of mass 107 kg travels down a frictionless ski trail. (a) If the top of the trail is a…

A: The given values are, M = 107 kg. H = 186m

Q: A 500 g particle moving along the x-axis experiences the force shown in (Figure 1). The particle's…

A: Given Data:Mass of the particle Initial velocity of the particle To Determine:The velocity of the…

Q: A man starts walking north at 2 ft/s from a point P. Five minutes later a woman starts walking south…

A: This problem can be solved using speed and distance formula and basic mathematical operations.…

Q: A motorboat is driven across a river at 3.0 km/h at right angles to a current that is flowing at…

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Q: Problem 6: A cube of mass M = 0.2 kg starts from rest at a height of 30 cm = 0.3 m above a table.…

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Q: In the figure above, a particle moves along a circle in a region of uniform magnetic field with…

A: A charged particle either electron or proton moves along a circle in a region of uniform magnetic…

Q: A weight lifter raises a 1055 N weight a vertical distance of 1.80 m in a time interval of 1.85 s…

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Q: A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 3.75 m above the water.…

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Q: Suppose you carry a bag of groceries weighing 145 N from your car to your kitchen, a distance of 35…

A: Weight, W = 145 NDistance, d = 35 mWork done, W = ?

Q: An auditorium is 45 meters wide and 60 meters long. The COVID- 19 code requires 1.4 meter radius…

A: The objective of the question is to find out the seating capacity of the auditorium considering the…

Q: A laser beam is incident on two slits with separation d = 0.026 mm. A screen is placed L = 3.2 m…

A: So the given situation is as follows:

Q: An ideal spring is attached to the ceiling. While the spring 850 g) = is held at its relaxed length,…

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Q: The instantaneous positions and velocities of three particles are shown in the figure below. Find:…

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Q: A 12-cm-long spring is attached to the ceiling. When a 1.5 kg mass is hung from it, the spring…

A: The objective of this question is to find the spring constant and the length of the spring when a…

Q: A soap bubble is 120 nm thick and illuminated by white light incident perpendicular to its surface.…

A: Given Data:The thickness of a soap bubble is, The index of refraction of a soap bubble is, The…

Q: The 60 Hz ac source of a series circuit has a voltage amplitude of 120 V. capacitive and inductive…

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Q: A curtain hangs straight down in front of an open window. A sudden gust of wind blows past the…

A: So we have given a conditionwhen a curtain hangs straight down in front of an open window and a…

Q: In exercise physiology studies, it is sometimes important to determine the location of a person's…

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Q: The heating coils in a hair dryer are 0.800 cm in diameter, have a combined length of 1.00 m, and a…

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Q: Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless,…

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Q: MULTIPLE CHOICE uestion 7 hat is the magnitude of the net force produced by these forc

A: Forces:F1 = 105 NF2 = 87 NAngle, θ = 90°

Q: During a circus act, one performer swings upside down hanging from a trapeze holding another, also…

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Q: Part A Calculate the potential energy of a system of two small spheres, one carrying a charge of…

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Q: 16. A steel ball of mass 0.33 kg moving with a velocity 2.50 m/s strikes a second ball of mass 0.250…

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Q: (ICM =M R2) with mass M=20 kg

A: The mass, M = 20kgThe radius, R = 0.5mThe angular acceleration: = 60rad/s

Q: 8. Find the ratio of mass of a particle in frame S' to S when the particle moving with velocity…

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Q: During collisions, it is often acceptable to ignore the force of gravity on an object. his is…

A: Concept of impulse is used to deal with this problem. Impulse is the change in momentum of an…

Q: What magnetic field will the given circuit element produce at point P? Out of the page is the…

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Q: arallel wires are suspended in space. The top wire is held in place and carries a current of 93.7 e…

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Q: A particle is traveling in a straight line. Its position at time t in seconds is given by s(t) = 5vt…

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Q: Problem 2: The figure shows two blocks joined with a rope that runs over a pulley. The mass of m2 is…

A: The larger mass is The smaller mass is Angle of inclination is Static friction between larger mass…

Q: An object of mass 7.21 kg is released from rest and drops 2.05 m to the floor .The collision is…

A: Mass of object  m = 7.21 kg        Height  H = 2.05 m

Q: A 1kg round object (radius 0.2 m), initially at rest, rolls down a ramp without slipping. The object…

A: Mass, m = 1 kgRadius, r = 0.2 mHeight, h = 1 mVelocity, v = 1 m/sMoment of inertia, I = ?

Q: generated at the center of the solenoid is 2.27 ml, what is the length of the solenoid (in cm)? cm

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Q: Which of the following statements are true? Select all correct.     The equilibrium points on an…

A: Energy diagrams are the diagrams which show change in potential energy, kinetic energy with position…

Q: 10. d) t4.04.t2.0 ault enimb tell A spring attached to the ceiling has a large bucket hanging from…

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Q: What is the pressure drop in atmospheres (atm) due to the Bernoulli effect as water goes into a…

A: The initial diameter The final diameter Volume flow rate