Waves in a String
A cello string .75m long has a 220-Hz fundamental frequency. Find the wave speed along the vibrating string. How can you produce a low- pitch by altering the length of the string, the thickness, and tension?
Velocity
BrainMass Solutions Available for Instant Download
Time and distance
2 buses, 385 miles apart, are traveling directly toward each other on the same road. One is traveling 60 miles an hour and the the other is traveling 50 miles an hour. After how long will they meet?
traveling wave equation obtain much information about the wave.
One end of a long wire under tension is moved up and down sending a wave along it. Assume the wire lies along an x axis with the moving end at the origin. The equation giving displacement y, in meters, of points on the wave is: (1) y= (.06 m) sin (5 x - 25 t) a. From given constants, calculate the value and units of the quan
Bernoulli's Theorem: Perfume Atomizer
An old fashioned perfume atomizer operates by the user squeezing a bulb which sets up a rapid flow of air through a horizontal tube. The reduction in pressure due tothis rapid flow causes perfume to be sucked up a vertical tube from the bottle and then expelled from the horizontal tube along with the air. For simplification, we
Bernoulli's Equation with Velocity
How do i rearrange Bernoulli's equation to eliminate the pressure and make velocity the subject?
A compressed spring drives two blocks from rest. They separate and the remaining block executes SHM.
On a frictionless table, a spring has one end fixed and the other attached to block M. Block m, is in contact but not attached to M. The spring, originally unstressed was compressed from 0 to -S. There the spring system was released from rest. See ATTACHMENT for a diagram with parameters and basic physics. Block M= 2.0 kg, blo
Developing total energy, amplitude and maximum speed
A mass M attached to an ideal spring with force constant k executes SHM on a horizontal frictionless table. It has a total energy of 1.0 Joule and amplitude .10 m, and its maximum speed when location x= 0, is 1.2 m/sec. a. find k and M and the period T. b. If the initial location of the mass is at x= +Xm, develop x(t), and v(
SHM equations from the motion of a point moving in a circle
A point p moves in a circle of radius R, at constant angular velocity w. The origin of an x axis is at the center of the circle. Represent as vectors, the location, the velocity and the acceleration of point p, then show the x direction projection of these three vectors to represent the location, the velocity and the acceleratio
Relativistic Addition of Velocities
Task: Suppose a pulsar with a speed of 0.96c approaches Earth, and a rocket with a speed of 0.995c heads toward the pulsar (both speeds measured in Earth's frame of reference). If the pulsar emits 10 pulses per second in its own frame of reference, at what rate are the pulses emitted in the rocket's frame of reference?
Two Trains Problem: Two trains leave different cities heading toward each other at different speeds. When and where do they meet?
Specifically, Train A, traveling 70 miles per hour (mph), leaves Westford heading toward Eastford, 260 miles away. At the same time Train B, traveling 60 mph, leaves Eastford heading toward Westford. When do the two trains meet? How far from each city do they meet? Thanks.
Momentum: Rocket moves in outer space; final velocity if gas is 25% of initial mass
A rocket moves in outer space with no external forces acting on it. It starts from rest and then continuously exhausts gas at a speed of 6.0 km/s, relative to the engines. Find the final velocity of the rocket if the gas accounts for 25% of its initial mass. Complete step by step solution needed.
Collision: Determining Velocity
Ball 1 with an initial speed of 12 m/s collides elastically with stationary balls 2 and 3 that are initially in contact with each other. The centers of balls 2 and 3 are on a line perpendicular to the initial velocity of ball 1. The three balls are identical. Ball 1 is aimed directly at the contact point, and all motion is frict
A Collision problem.
A 0.15 kg ball hits a wall with a velocity of (6.00 m/s) i + (6.50 m/s) j + (5.50 m/s) k. It rebounds from the wall with a velocity of (2.00 m/s) i + (3.50 m/s) j + (-3.20 m/s) k a) What is the change in the ball's momentum? (__i +__j +__k ) kg · m/s b) What is the impulse on the ball? (__i +__j +__k ) N · s (c) Wh
Momentum: Rocket Firing in Space
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 265*10^105 kg, of which 200*10^5 kg is fuel. The engine is fired for 250s, during which fuel is consumed at the rate of 480 kg/s. The speed of the exhaust product relative to the rocket is 3.23 km/s. a) What is the rock
Momentum Concepts Found
Why is it difficult for a fire-fighter to hold a hose that ejects large amounts of water at high speed? If an 18-wheeler hit Geo (small car) at equal speeds in a head-on collision: Which vehicle will experience the greatest ... force of impact? change in momentum? acceleration? A billiard ball will stop when it collid
Collisions and Momentum
Question: Miguel has a mass of 100 kg and is running toward end-zone at 9 m/s. Gonzales mass of 75 kg runs at Miguel at 12 m/s. They collide at two year line. Does Miguel score? Explain using momentum or collision.
Collisions Contact Forces
Question: A tennis player returns a 30 m/s serve back at 25 m/s after making contact with the ball for .5 seconds. If the ball has a mass of 0.2 kg, what is the force she exerted on the ball?
Impulse and Velocity
Question: A 50 kg cart is moving across a friction-less floor at 2 m/s. A 70 kg boy, riding the cart, jumps off so that he hits the floor with zero velocity. 1. What impulse did the boy give to the cart? 2. What was the velocity of the cart after the boy jumped?
Momentum and Impulse inquiry
While being thrown, a net force of 132 N acts on a baseball (mass = 140 g) for a period of 4.5 X 10^-2 seconds. The balls initial velocity is zero before leaving the pitchers hand. When the batter hits the ball, a net force of 1320 N, opposite the direciton of the balls initial motion, acts on the ball for 9 X 10^-3 seconds du
Two rods AB and DE are connected as shown in the attached figure. Knowing that point B moves downward with velocity 1.2 m/s determine the instant shown the a) angular velocity of each rod (b) velocity of point E
Two rods AB and DE are connected as shown in the attached figure. Knowing that point B moves downward with velocity 1.2 m/s determine the instant shown the a) angular velocity of each rod (b) velocity of point E
Direction and Average Velocity of a Bird's Flight
A bird flies north at 20 m/s for 30 seconds. It rests for 18 seconds and then flies east at 25 m/s for 32 seconds. Find the average velocity for the entire trip and the direction headed.
Particle Completing a Revolution
A charged particle with a charge-to-mass ratio of q/m = 6.0E8 C/kg travels on a circular path that is perpendicular to a magnetic field whose magnitude is 0.71 T. How much time does it take for the particle to complete one revolution? Answer in seconds.
Plane Motion; Angular Velocity
Please see attachments. Answers given: .378 rads/sec; 160.4 mm/sec.
Disk Angular Velocity
Please see attachments. ans. A)Wbd = 4.38 rad/sec curving down; Vd = .306 m/sec up. B) Wbd = 0; Vd = 1.05 m/sec down. C) Wbd = 4.38 rad/sec curving up; Vd = .306 m/sec down.
Impact Restitution Velocity
Please see attachments to view the question. I am not too sure what calculations I need to perform in order to get the right value.
Maximum Allowable Impulsive Force - Max Velocity
Please see the attached files for full problem description. (Note weight is pounds force not pounds mass) Given that, Maximum Allowable impulsive force = 0.8 lb. Sec, and asked you to calculate what' s the max velocity that can be achieved through this force
Velocity and Inclined Blocks
Please see the attachment for the question on the velocity of the block in incline.
Basic properties of vectors, acceleration, time, and velocity
Please see the attached file for the full problem description concerning vectors, velocity, acceleration, and measurements of time. Vector A and B lie in the xy plane. We can deduce that A=B if......
Basic physics
Please see the attached file for full problem description. Please use very basic physics with this. No kinetic or potential energy equations. Thanks.
Basic Physics - Projectile Motion
Please see the attachment. Please use very basic physics on this. Like the range equation, not mgh or kinetic or potential energy. Thanks.