1. (6 points) Gold has a density of 19.3 g/cm2. What is the radius r of a solid

Question

1. (6 points) Gold has a density of 19.3 g/cm2. What is the radius r of a solid sphere of gold that has a mass of m 30.0 kg? a) 1.55 m b) 11.1 cm c) 7.19 cm d) 1.55 cnm e) 0.719 cm (6 points) The graph shows the velocity of an object moving along a straight line as a function of time. Identify, in this order, the labeled points at which the object has the largest acceleration, the largest speed, and the largest positive displacement from its initial position a) A, B, C b) B, A,E c) C, D, E d) A, B, E c) A, D, C 2. 3. (6 points) The position of an object as a function of time is given by x b ct2, where b= 18 0 m/s 3 and c = 1.0 m s. The object's acceleration at t = 0.50 s is a) -42.0 m/s2 b) 53.0 m/s c) 150 m/s d) -2.50 m/s e) 29.5 m/s

Explanation / Answer

here,

density of gold , p = 19.3 g/cm^3 = 19300 kg/m^3

mass , m = 30 kg

let the radius of solid sphere be r

volume = mass /density = 4/3 * pi * r^3

30 /19300 = 4/3 * pi * r^3

r= 0.0719 m = 7.19 cm

the radius of the spehre is c) 7.19 cm

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.