(124 unread) - smith3826@yaho Sample Exam Physics 013 b (43) Buddy Hield can't get emotix (124 unread)- smith3826@yaho Not secure huscience.org/phys013/index.php/sample-exam/ C 5. Write the vector a = li+1j in magnitude angle notation. 6. Write the vector a=9, A" = 45 in component notation. 7. Calculate the dot product of a li+2j+1k and b 1i+1j-3k. 8. Calculate the cross product of a = li+2j+1k and b=1i+1j-3k. 9. Calculate the dot product of vcctors a and b if a=2, b-3, and the angle between them is 90 degrees. 10. Calculate the magnitude of the cross product of vectors a and b if a=2, b-3, and the angle between them is 90 degrees. 11. A particle travels on the x axis. If its velocity is 10m/s at t 2s, what is its velocity at t0 seconds if it accelerates at 1m/s?? 12. What is the maximum height of a ball thrown upwards at 10 m/s?

Q: Nitrogen-12 decays through positron emission into this element: A N 13

A: Nitrogen-12 decays through positron emission. Find: After emission which element created.

Q: (numbers 1-2) A 1.00 kg block is sliding up a surface inclined at 33.0° above the horizontal. The…

A:

Q: A small 2.0 kg block moves in a horizontal circular trajectory at constant speed. The block is…

A:

Q: 8. An object is placed 10.0 cm in front of a thin converging lens with a focal length of 8.0 cm.…

A:

Q: You can easily convert common units and measures electronically, but you still should be able to use…

A:

Q: Light (A = 410 nm) passes through a slit of 5.0 x10-6 m and shine on a flat screen that is located…

A:

Q: The force of friction experienced by a 89.2 kg cross-country skier sliding on unwaxed skis along dry…

A:

Q: Assume that the universe consists of only two stars. At some time t2, the stars are separated by a…

A: The formula for gravitational potential energy is  U=-Gm1m2r where U is the potential energy, G is…

Q: Q) Consider a fiber optic in air with no = 1, n2 = 1.5. The acceptance angle of the fiber is 23.6°.…

A: The optical fibers are used for the purpose of transporting signals to large distances without much…

Q: An aluminum ring of radius r₁=5.00 cm and a resistance of 3.55 x 10-4 is placed around one end of a…

A:

Q: A 0.4 C charge and a 0.3 charge exert a force of 55 N on each other. How far apart are the charges?

A: (1) Given: Charges q1=0.4 C, q2=0.3 C, Force between the charges F=55 N. Required: Distance between…

Q: The center of mass of a system is at x = 2 m. There are three point masses in the system. The first…

A: Given data:  Center of mass xcm = 2 m m1 = 0.002 kg at x1 = 0.5 m m2 = 0.006 kg at x2 = 1.2 m m3 =…

Q: Determine the number of significant figures in the following numbers. a. 6.12 b. 4.009

A: Given data:  Two numbers 6.12 and 4.009 Required: The number of significant figures

Q: The path r(t) = (t) + (21²-5) j describes motion on the parabola y = 2x2-5. Find the particle's…

A:

Q: N vs. TIME graph below, click on the spot where the VELOCITY IS ZERO (the arrow will be placed where…

A: Introduction: When the body does not gets displaced with time, the velocity is said to be zero. So,…

Q: -15 A small droplet of oil with a mass of 2.00 x 10 kg is given a small excess charge, which allows…

A: Given data:  A small droplet held suspended  Direction of electric field = upward Required:  The…

Q: 8. In this circuit, the current through the 5-2 resistor is approximately 100 V 10Ω 10Ω A) 4 A B) 20…

A:

Q: QUESTION 6 1. Claude applies a force to a crate to move it across the floor. The force is in the…

A: SOlution: given that F =0.6X3

Q: a. b. C. F(x)= F(x) = F(x) = f(x) = 2 + 5x²-x³ f(x) = 9x1/4-7x3/4 f(x) = -1/

A:

Q: 10. An open container of water is filled to the very top. A 7 kg block with a density between 300…

A:

Q: Suppose we have a tunnel of 800 feet long in its rest with doors on each end which can be used to…

A: Length of train = 1000 ft Speed of train = 0.8 c Tunnel width = 800 ft

Q: In a beehive, each cell is a regular hexagonal prism, open at one end with a trihedral angle at the…

A:

Q: Vector A (5, 2) and B = (1, -1) in (x, y) component form. What angle does A + B make with the…

A: Vector A=(5, 2) and B=(1, -1) in the form of (x, y) component form.

Q: A student, who weighs 610N, is standing on a bathroom scale and riding an elevator that is moving…

A: Given, The weight of the student, W=610 N The acceleration of the elevator, a=3.1 m/s2

Q: A horizontal tension force pulls to the right on block A. Block A slides to the right on a…

A:

Q: In some rural towns a loud whistle will announce noon. If you set your watch by this noon whistle…

A: Distance, d = 5.6 km = 5.6×1000 m = 5600 m Speed of sound, v = 330 m/s

Q: 21. An ideal spring with k = 6 N/m is initially compressed 0.40 m. One end is attached to a wall and…

A:

Q: The illumination of an object by a light source is directly proportional to the strength of the…

A:

Q: An object is moving in a perfect circle at a constant rate so that it sweeps out 90⁰ in 0.3 seconds.…

A: Given:- An object moves in a perfect circle at a constant rate so that it sweeps out 90° in 0.3…

Q: Use the position versus time graph to answer the question. What distance does the object travel from…

A: Required ; To find the distance travelled by the object from time t = 0 to t = 3.

Q: Example 2: The two uniform boxes (each with weight 350 lb) are simply stacked as shown. If the…

A: