1. A swimming pool has a dimension of at the rate of 16 ft wide, 32 ft long and 8 ft deep. If it needed to be filled to full in 32 hours, what should be the rate in gal/min for water flowing to the pool?
a) 24 b)16 c)12 d)8 e) 36
2. Kiki releases a rock at rest from the top of a 80 m tower. What is the speed of the rock as it hits the ground?
a)40 m/s b) 48 m/s c) 56 m/s d) 32 m/s e) 36 m/s
3. The diameter of the Milky Way Galaxy is estimated at about 105 light years. Express this distance in meters.
a) 9 x 1019m b)10 x 1016m c) 9 x 1018m d) 10 x 1015m e) 9 x 1020m
4. Vector A is 3 units in length and points along the positive x-axis; vector B is 4 units in length and points along a direction 150˚ from the positive x-axis. What is the magnitude of A - B?
a) 1.4 units b) 6.8 units c) 2.2 units d) 4.8 units e) 7.2 units
1. A swimming pool has a dimension of at the rate of 16 ft wide, 32...
A snusodal wave moving along a string is shown twice in Figure 16-32, as crest A travels in the positive direction of an x axis by distance d = 3.25 cm in 42.0 ms. The tick marks along the axis are separated by 2.5 cm. 6.0 mm Figure 16-32 The wave equation is of the form below. y(x, t)-y,"sin ( kr ± w t) Include SI units for all answers. Include rad in your units where appropriate. (a) What is...
Question 1 (1 point) A vector B length 18 units. It is directed 32° counterclockwise from the positive x- axis. Its y-component is: Your Answer: Answer Question 2 (1 point) A vector B length 12 units. It is directed 30° clockwise from the positive y-axis. Its x- component is: Your Answer: Answer Question 3 (1 point) A vector B length 12 units. It is directed 30° clockwise from the negative y-axis. Its X-component is:
1. Vector A = (3î + 4ĵ)ft. Vector B has a magnitude of 12 ft at an angle of 120 ° CCW from the x-axis. A. Determine the angle of A + B, CCW from the x-axis. Answer must be within 0.5 degrees (include units with answer) PLEASE DO NOT GIVE ME A NEGATIVE ANGLE, GIVE ME A POSITIVE ONE AND YOU HAVE TO BE EXACT WITH YOUR ANSWER. NO ROUNDING. HINT: The answer is not +/- 78.22 deg. The...
1. Vector A = (3î + 4ĵ)ft. Vector B has a magnitude of 12 ft at an angle of 120 ° CCW from the x-axis. A. Determine the angle of A + B, CCW from the x-axis. Answer must be within 0.5 degrees (include units with answer) PLEASE DO NOT GIVE ME A NEGATIVE ANGLE, GIVE ME A POSITIVE ONE AND YOU HAVE TO BE EXACT WITH YOUR ANSWER. NO ROUNDING. HINT: The answer is not +/- 78.22 deg. The...
1. A force vector has a magnitude of 575 newtons and points at an angle of 36 degree below the positive x axis. What are the x scalar component and y scalar component of the vector 2. Vector A -> points along the +y axis and has a magnitude of 100.0 units. Vector B-> points at an angle of 60.0 degree above the +x axis and has a magnitude of 200.0 units. Vector C-> points along the +x axis and...
can someone please help me with 2-5? I want to make sure I have
them done correctly. I have to do well in this class.
thank you
nitude and direction of B 2. Vector A has a magnitude of 8.00 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative xaxis. Using graphical methods, find (a) the vector sum A B and (b) the...
General Physics
Problem 4: At a local swimming pool, the diving board is elevated h = 9.5 m above the pool's surface and overhangs the pool edge by L = 2 m. A diver runs horizontally along the diving board with a speed of vo = 4.8 m/s and then falls into the pool. Neglect air resistance. Use a coordinate system with the horizontal x-axis pointing in the direction of the diver's initial motion, and the vertical y-axis pointing up....
Vector A has a magnitude of 4 m and points 30° above the positive x axis, vector B has a magnitude of 6 m and points 60° below the positive x axis. The vector R-A + B (sin 30°= cos 60°= 0.5; sin 60°-cos 30°= 0.866) 3. The component of R along the x axis is: A. 3.46 m B. 3.2 m C. 0.46 m 4a2 O. ))6.46 m E. None of the above 4. The component of R along...
Vector A has a negative x component 3.30 units in length and a positive y component 2.02 units in length (a) Determine an expression for A in unit-vector notation. j) units (b) Determine the magnitude and direction of A magnitude direction unit(s) o counterclockwise from the positive x axis (e) what vector B when added to vector A, gives a resultant vector with no x component and a negative y component 4.14 units in length? j) units
Question 16 of 16 > Vector C has a magnitude of 22.2 m and points in the -y-direction. Vectors A and B both have positive y-components, and make angles of a = 42.4° and B = 27.2° with the positive and negative x-axis, respectively. If the vector sum A + B + C = 0, what are the magnitudes of A and B? JA =