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# Velocity

### Nodes and Antinodes of Standing Waves

Please help with the following problem, there are 2 more parts but I cannot send them until I have to answer to part A, thanks. Standing Waves in Action Consider a string of length 1.0 meter, fixed at both ends, with mass 100 grams and tension 1.0 newtons. Give the number of nodes and antinodes set up on the string if i

### Kinematics problems on average speed/velocity, displacement

1) A plane flies 485 km away from its base at 708 m/s, then flies back to its base at 1062 m/s. What is the average speed in m/s? 2) See attachment and solve problems 15 - 17.

### Kinematics: Velocity of a car driving 7 hours at 46km/h then 7 hours at 69km/h, Recon plane, and Electron in a TV.

Please use step by step solutions with answers and show equations used. Please show every step no matter how minor please. 1)You drive a car 7 hours at 46kmh then 7 hours at 69kmh. What is your average velocity? Answer in km/h. 2) What is your average velocity if you drive a distance of 402.5 km at a speed of 46 km/h, t

### A liquid flows through two horizontal sections of tubing joined end to end. The cross sectional area, flow speed and pressure in the first tubing is given. The cross sectional area of the second tubing is given. To calculate the flow speed and pressure in the smaller section.

A liquid with a density of 1.37*10^3 kg/m^3 flows through two horizontal sections of tubing joined end to end. In the first section, the cross sectional area is 10.4cm^2, the flow speed is 276cm/sec, and the pressure is 1.42*10^5 Pa. In the second section, the cross sectional area is 2.71cm^2. a) Calculate the flow speed in

### Acceleration and Displacement

How long is the electron in the accelerating region? Answer in units of s. A rocket driven sled running on a straight level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of 408m/s in a 1.6 starting from rest. What is the acceleration of the sled,

### Simple Harmonic Motion Conceptual Question

Please help to explain the following graphs & questions in attachment. An object of mass is attached to a vertically oriented spring. The object is pulled a short distance below its equilibrium position and released from rest. Set the origin of the coordinate system at the equilibrium position of the object and choose upward

### Problems on wave motion, beats, standing waves

(See attached file for full problem description) On quiz 2 below please explain 1-5 better and 7 - 10 better, specifically, what equations are used to solve each question, how are the numbers and equations worked out to see better. Please do the same for quiz 3 for problems 1-7. See everything below this page and the n

### Some Energy Motion Problems

Energy/Motion problems 4. A 10-kg box is pushed by from rest by a 100-Newton force at a 30 degree angle downward with respect to the horizontal. The coefficient of friction between the box and the floor is 0.35. Determine the box's velocity (in meters/second to two decimal places) after the box has been moved through a distan

### Velocity & Acceleration of a Bird Flying as a Function of Time

The coordinates of a bird flying in the XY-plane are given by x(t)=at and y(t) = 3.0 m - Bt^2, where a = 2.4m/s and B = 1.2m/s2. Calculate the velocity and acceleration vectors of the bird as functions of time.

### Newton's third law and some puzzling questions

Have a couple of puzzling questions having trouble answering. 1. Since the force that acts on a bullet when a gun is fired is equaland opposite to the force that cats on the gun, does this imply a zero net force and therefore the impossibility of an accelerating bullet? Explain 2. When you jump upward the earth recoils bac

### Differentiation

Displacement s=2t-1.8In(0.6+2t) Show expressions for velocity and acceleration of the particle.

### Fluid pressure

A horizontal has a fluid flowing through it. The fluid(density = 1000kg/m^3) is flowing through it at the rate of 2 x 10^-4 m^3/s. The inside diameter of the larger portion is 3 cm and that of the diameter of the constriction is 1 cm. Find the pressure difference that exists between the larger and the constricted sections.

### Calculations for Speed and Velocity

1) A 70.2 kg skater is carrying a 2.5 kg snowball and moving forward with a velocity of 9.7 m/s. The skater throws the snowball forward with a speed of 33.4 m/s. Determine the speed of the skater after hurling the snowball. 2) A 2.34 kg cannon is at rest. When ignited, it fires a 56.7 g tennis ball forward with a speed of 80.4

### Two Physics Problems

1. Figure one in the attached diagram indicates the path through space of the water balloon. On the diagram, place arrows indicating the: (a) velocity vector (b) the acceleration vector for te balloon. Label which is which. Do this for the three points indicated on FIGURE 1. 7. The plot (in the figure attached) shows t

### Physics problems about velocity, centripetal force and coefficient of static friction

A group of physics students construct a device to launch water balloons. They launch a water balloon on a level football field, with an initial velocity of 8.0 m/s at an angle 38 degree above the horizontal. a. Find the vertical component of the initial velocity. b. Find the horizontal component of the initial velocity. S

### Physics momentum problems: Velocity, speed, Newtons, weight, force, direction, time

8) If an ostrich with a mass of 184.9 kg and is running northward with a velocity of 20.4 m/s, then with what velocity must a chicken run with a mass of 46.2 kg to have the same momentum as the ostrich? 9) Air bags are designed to protect passengers during collisions by extending the time of impact. A force of 81.9 Newtons is

### Calculating acceleration and velocity

4. A bowling ball of mass 4.0kg strikes a 10-pin of mass 0.80kg. The ball's velocity was 1.5m/s before the collision, but after the collision it is 1.2m/s. What is the velocity of the pin just after the collision? Treat this as a one-dimensional situation: we assume that the ball hits the pin "square". 5. A 60kg bicyclist is

### Finding velocity after a collision of objects

A 50 g ball of putty moving with a velocity of 3.0 ms has an inelastic collision head on with a stationary mass of 50 g and sticks to it. Find the velocity of the stationary mass and the putty after the collision.

### The initial (t=0) position, velocity, and acceleration of an object moving in simple harmonic motion

The initial (t=0) position, velocity, and acceleration of an object moving in simple harmonic motion (with center at the origin x=0) are xi=3.00 cm, vi=4.00 cm/s, and ai=-7.00 cm/s2, respectively. Use the cosine function to specify the position. (a) Determine the angular frequency of the motion. rad/s (b) Determine the

### Calculating Speed

7-57 A 0.150-kg block of ice is placed against a horizontal compressed spring mounted on a horizontal tabletop that is 1.20m above the floor. The spring has force constant 1900N/m and is initially compressed 0.045m. The mass of the spring is negligible. The spring is released, and the block slides along the table, goes off the e

### Simple Harmonic Motion: Three problems

(See attached file for full problem description with symbols and diagrams) 1.) A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 6.00 . Part A What is the oscillation frequency of the two-block system? 2.) The figure is the velocity-versus-time gra

### Vectors and forces

(See attached file for full problem description with diagrams) --- ? A 9.26-kg sign is hung using two cables which make an angle of 34.5 degrees with the horizontal. Determine the weight (in Newtons) of the sign. ? Referring to the previous problem.) Determine the tension (in Newtons) in a single cable. ? A 55.9-kg sig

### Newton's Laws of Motion Problems

See the attached file. 1. A 1-kg block of wood is dropped from a position 2.4 meters above a resting 0.05-kg ball. Shortly thereafter, the ball is shot horizontally at a velocity of 28 m/s. If the wood is 8.4 meters away from the ball in the horizontal direction, determine the distance (to two decimal places) the wood falls fro

### Rotational Motion: Motion on a turn table.

A runner of mass m runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to the earth has magnitude v. The turntable is rotating in the opposite direction with an angular velocity of magnitude omega relative to the earth. The radius of the turnt

### Escape Velocity

If a planet has a mass of 9.42 x 1024 kg and a radius of 5.47 x 106 meters, to the nearest m/s what is its escape velocity? If the mass is increased by a factor of 2, what is the new escape velocity? If the radius is decreased by a factor of 0.22, what is its new escape velocity? (See attached file for full problem desc

### Four problems related to rotational motion are solved.

(See attached file for full problem description with diagram and symbols) --- 1.) A thin, 80.0 disk with a diameter of 9.00 rotates about an axis through its center with 0.220 of kinetic energy. What is the speed of a point on the rim? 2.) A 3.0-m-long rigid beam with a mass of 100 kg is supported at each end. An 8

### Waves, Heat and Light: Calculate velocity of electron waves

See attached file for full problem description. This course is the third in a three-term introductory physics sequence. The topics covered in this course include: I. Heat and Thermodynamics, II. Wave Phenomena, and III. Introduction to Special Relativity. These topics are essential for understanding a wide range of physical p