While training for a dog show, a 3.8 kg dog does 32 pushups in a minute, displacing its center of mass by a distance of 8.5 cm for each pushup. Determine the total power needed by the dog when moving upwards. a.1.72 W b. 0.172 W c. 1.69 W d. 1.034 W

Q: 3. A mass-spring oscillator has a spring constant of 400 N/m and has a 65 kg mass attached to its en...

A:

Q: QUESTION 7 Three positively charged point particles, each with identical mass and velocity, pass thr...

A:

Q: Compute the coordinates of the centroid (T, j) of the area shown. d C a Values for dimensions on the...

A:

Q: A particle is moving along a circular path with tangential acceleration function of a(t) = (0.12t + ...

A: Tangential acceleration of particle (a) = 0.12t + 0.3 Radius of curvature = 5.5 m  Velocity at t = 3...

Q: (a) As a planet orbits its sun, how much torque does the sun's gravitational force exert on the plan...

A: Torque = it is the cross product of position vector and force.  Angular momentum:- It is the cross p...

Q: A steel ball of mass 0.600 kg is fastened to a cord that is 80.0 cm long and fixed at the far end. T...

A:

Q: MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A velocity selector in a mass spectrometer, like the one ...

A:

Q: The RC circuit has R = 5.4 kΩ and C = 4.0 μF. The capacitor is a voltage V0 at t=0 when the switch i...

A:

Q: Rq = 5.50 R, = 4L Ry = 7:50

A:

Q: Why is it important that the motion of the wooden ball in the activity is kept horizontal?

A:

Q: Which of the following is TRUE for an object thrown along horizontal? Choose the answer: a. it has a...

A: Neglecting air friction, there no force in horizontal direction, so horizontal velocity will be cons...

Q: You run your 1500 W microwave in your dorm room for 5.0 minutes to heat your TV dinner. What is the ...

A: Energy = power × time 1 kWh = 3.6 × 106 J 

Q: What physical phenomenon predominantly contributes to the magentic field of the earth?   a. Charge...

A: The Earth's outer core is in a state of turbulent convection as the result of radioactive heating an...

Q: Which of the following is TRUE about mass and weight? a. Mass is a vector quantity and weight is a s...

A: The quantity which has only magnitude but no direction is called scalar quantity.  The quantity whic...

Q: An ideal gas has volume of 5 liter at 1.2 atm and -20°C. Compute the temperature (in Kelvin) of the ...

A:

Q: Part A A 15.6-kg mass fastened to the end of a steel wire with an unstretched length of 0.600 m is w...

A:

Q: Io orbits Jupiter at an average distance of 4.22 105 km with an orbital period of 0.00485 yr. The Mo...

A:

Q: What is the force F, on the charge located at x = 8.000 cm in the figure given that q = 2.250 µC? Th...

A:

Q: One of the concrete pillars that support a house is 2.2 m tall and has a radius of 0.75 m. The densi...

A:

Q: cannon uses a spring to project a 5.30-g soft rubber ball. The spring is originally compressed by 5....

A: According to conservation of energy Total energy of isolated system re

Q: 1. A thin rod of mass 2 kg and length 40 cm is attached to a uniform disk (at point A on the edge of...

A: Moment of inertia of a rod=1/12ML² Moment of inertia of disk=1/2MR²

Q: Problem 4: Two tractor-trailer trucks are driving side-by-side on interstate 40. The one on the left...

A:

Q: Two blocks A (Wa=12 N) and B (We=20 N) are connected by very light string that passes over a frictio...

A:

Q: EXAMPLE 24–13 Two Polaroids at 60°. Unpolarized light passes through two Polaroids; the axis of the ...

A: Write the given data: let the intensity after first polarizer be I1let the intensity after second po...

Q: 2. A 2.0-kg block of wood is attached to a horizontal spring that is at its equilibrium length (not ...

A:

Q: 4. A ball with mass m, A, travelling towards east along smooth horizontal surface with speed Vo =12 ...

A:

Q: A 3.50-kN piano is lifted by three workers at constant speed to an apartment 25.0 m above the street...

A:

Q: A 109 turn circular coil of radius 2.01 cm is immersed in a uniform magnetic field that is perpendic...

A:

Q: I could really use some help on some questions! The problem is as follows: A thine wire of length...

A:

Q: As part of an important engineering project for NASA, you've been asked to do some unit conversions....

A:

Q: C,=3F C2 = 1.5 P 20V I

A: Equivalent capacitance in parallel  C = C1 + C2 +C3  In parallel combination potential difference re...

Q: A 0.10-kg ball is thrown straight up into the air with an initial speed of 15 m/s. Find the momentum...

A: Given that:- Mass of ball=0.1kg

Q: Calculate the magnetic field strength needed on a 180-turn square loop 20.0 cm on a side to create a...

A:

Q: If a speed of 40 m/s is required for takeoff, what minimum length of runway is needed? A transport p...

A:

Q: 6. An astronaut in space becomes unteathered from her space craft while tightening bolts on a satell...

A: mass of wrench (m) = 3.2 kg mass of astronaut combined with space suit (M) = 120 kg speed with which...

Q: 6. Three large parallel insulating sheets have surface charge densities +0.020 C/m², +0.010 C/m², an...

A:

Q: 8/peed to

A:

Q: When operated on a household 110.0 V line, typical hair dryers draw about 1450 W of power. The curre...

A:

Q: A particle moves in a straight line so that its position x(t) meters at time t seconds, relative to ...

A:

Q: A 4 kg ball is moving across a frictionless surface wit a constant velocity of 2 m/s. Determine the ...

A: A 4 kg ball is moving across a frictionless surface with a constant velocity of 2 m/s

Q: 1. In this lab you will be calculating the resistivity, you will first need to determine the cross s...

A:

Q: An electron enters a region of space containing a uniform 2.67 x 10-5 T magnetic field. Its speed is...

A:

Q: An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the ca...

A: Option (a) - greater than the weight of the elevator. Reason - 1)Here given that  the elevator is sl...

Q: 1. The crate has a weight of W = 150 lb, and the coefficients of static and kinetic friction are u, ...

A: Given, Weight (W)=150lb The coefficient of static friction=0.3 The coefficient of kinetic friction=0...

Q: Tarzan is running at top speed 28.8 kph and grabs a vine hanging vertically from a tall tree in the ...

A: Given, Speed=28.8km/h

Q: The force required to maintain an object at a constant velocity in free space is equal to The weight...

A: Correct answer :                              The correct answer is option (4) Zero                 ...

Q: 5. Given the circuit in Fig 1; R1, R2 and R3 have a resistance of 2, 5 and 6 ohms respectively. Calc...

A: Part (5): Given: R1=2 ΩR2=5 ΩR3=6 Ω

Q: 5. A 98-N sack of grain is hoisted to a storage room 50 m above the ground floor of a grain elevator...

A:

Q: Two parallel, conducting wires carry oppositely directed currents of 3.0 A and 5.0 A as shown the di...

A:

Q: A 45.1 C charge is moving with a velocity of 39.6 m/s in the +x-direction. A magnetic field of 89 T ...

A:

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.