A mass is connected by a light string that passes over a pulley of mass M to a mass sliding on a frictionless incline as shown in the figure. There is no slippage between the string and the pulley. The pulley has a radius of 30.0 cm and a moment of inertia of If is 4.00 kg, is 4.00 kg, M is 4.00 kg, and the angle is 70.0 degrees, then what is the acceleration of

src="https://sciemce.com/media/4/354096dfc31fe48a34.png" class="w-image" />?







A. 3.10

B. 2.89

C. 2.43

D. 2.15

E. 1.49

---

D. 2.15

Physics & Space Science

What form or forms of energy does a falling elastic ball have when it is at its most-squeezed position on the floor, before it begins to rebound [see figure above]?

A) Kinetic and gravitational and elastic B) Kinetic only C) Kinetic and elastic D) Gravitational only E) Elastic only

A pressure of 20 kPa is applied to one piston in a simple hydraulic device, the pressure on a piston of larger area will be

A) less than 20 kPa. B) the same 20 kPa. C) more than 20 kPa. D) all of the above E) none of the above

One ray that is useful in locating the image formed by a convex mirror is the ray that is incident on the mirror in a path directed toward the focal point. This ray is reflected

A. through the center of curvature. B. directly back along its incident path. C. on a path tangent to the mirror. D. on a path parallel to the mirror axis.

A small airplane with a wing span of 12 m flies horizontally and due north at a speed of 60 m/s in a region where the magnetic field of the earth is 60 ?T directed 60° below the horizontal. What is the magnitude of the induced emf between the ends of the wing?

a. 50 mV b. 31 mV c. 37 mV d. 44 mV e. 22 mV