Which of the following would not contribute to a high modulus of resilience?

(a) A high ductility
(b) A low elastic modulus
(c) A high yield stress
(d) A high yield strain


(a) A high ductility

Physics & Space Science

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Projectile Motion: A hockey puck slides off the edge of a horizontal platform with an initial velocity of 28.0 m/s horizontally in a city where the acceleration due to gravity is 9.81 m/s2. The puck experiences no significant air resistance as it falls. The height of the platform above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground?

A. 77.2° B. 72.6° C. 12.8° D. 12.6° E. 31.8°

Physics & Space Science

A 2.00-kg object is attached to an ideal massless horizontal spring of spring constant 100.0 N/m and is at rest on a frictionless horizontal table. The spring is aligned along the x-axis and is fixed to a peg in the table

Suddenly this mass is struck by another 2.00-kg object traveling along the x-axis at 3.00 m/s, and the two masses stick together. What are the amplitude and period of the oscillations that result from this collision? A) 0.300 m, 1.26 s B) 0.300 m, 0.889 s C) 0.424 m, 0.889 s D) 0.424 m, 1.26 s E) 0.424 m, 5.00 s

Physics & Space Science

A hobbyist launches a projectile from ground level on a horizontal plain. It reaches a maximum height of 72.3 m and lands 111 m from the launch point. Assume no air. What was the angle of launch if g = 9.80 m/s2?

A) 69.0° B) 67.4° C) 22.6° D) 44.8°

Physics & Space Science

A 100-W resistance heater is connected to a 110-V dc source. What current flows through the heater?

A) 1.1 A B) 2.2 A C) 3.3 A D) 4.4 A E) 0.91 A

Physics & Space Science