Calculate the kinetic energies of (a) a 2000.0-kg automobile moving at 100.0 km/h; (b) an 80.-kg

Q: A car is travelling around a circular track of radius 100 m at a constant speed of 70 km/h. 1200 kg…

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Q: Two blocks are connected by a (massless) string that passes over a (massless, frictionless) pulley…

A: Visualize the Problem:

Q: The spacing of ruled lines on a diffraction grating is 1,638 nm. The grating is illuminated at…

A: Given data d=1638 nmλ1=700 nmλ2=391.6 nm Here d is the spacing between the lines. While λ is the…

Q: For the shown capacitor if d = 2 cm, A = 135 cm2, k1 = 4, and k2 = 8, find the equivalent capacity C…

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Q: Hydrogen atoms can absorb energy corresponding to four spectral lines with wavelengths in the…

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Q: Pluto eats 1.26 pounds of dry dog food per day. The dry food is available in 1.5 lb sacks, priced…

A: Pluto eats  of dry dog food per day. Using the conversion factor,  we can convert this to kilograms:

Q: A sign is hanging as shown. If m = 9.7 kg, 0, = 75°, and 02 = 35°, then find the tension in each of…

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Q: A 0.39 m copper rod with a mass of 5.00×10-² kg carries a current of 11 A in the positive x…

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Q: Table R(Q) im(A) 100 0.030 200 0.005 330 0.006 100 0.019 200 0.005 3. Using Kirchhoff's Rules,…

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Q: 4) What is U, the energy stored in this capacitor? J Submit 5) The battery is now disconnected from…

A: 4) The net capacitance is,…

Q: A boxer punched a punching bag weighing 300 N horizontally with a force of 200 N. The c.g. of the…

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Q: a.  moves downward with constant speed.  b.  moves upward with constant speed.  c.  speed down.…

A: Given:-  The apparent weight of a fish in an elevator is maximum when the elevator. Find:-  the…

Q: Find the energy associated with the 3rd line of the Paschen series in the hydrogen emission…

A: We know the formula for Paschen Series : 1λ=R132-1n2     here, n=4,5,6,.....And R(Rydberg…

Q: Q14 only

A: The object with less density floats on the objects with greater density but the object with greater…

Q: 92=-2.09 91=+q d d 93= -3.09 94 = -4.09

A: Given that:q1=q=+2.5 μC=2.5×10-6 Cq2=-2.0qq3=-3.0qq4=-4.0qThe distance is: d=34 cm=0.34 m To…

Q: 20. The block has a mass of 60 kg. The coefficient of static friction is 0.3. The minimum force, P…

A: Given that mass of the block is m=60kg the angle of inclination from the horizontal is α=40o A force…

Q: A woman driving a 2000 kg car at 15 m/s fully applies the brakes 50. m from a stoplight. If the car…

A: Given data: Mass (m) = 2000 kg Initial velocity (v0) = 15 m/s Final velocity (Vf) = 0 m/s Brakes…

Q: X-rays with a wavelength of 0.120 nm. The atomic planes in the crystal are separated by 0.20 nm.…

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Q: A girl is using a rope to pull a box that weighs 300 lb across a level surface with constant…

A: Given data :Weight of box, w = 300 lbAngle = 30°Tension in the rope, T = 100 lb which represents the…

Q: 13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed…

A: mass of box = 54 kg speed = 25 m/sa = 5.6 m/s2