Echo away: You are driving toward the base of a cliff and you honk your horn. a) Is there a Doppler shift of the sound when you hear the echo? If so, is it like a moving source or moving observer and how is the frequency shifted? b) What if the reflection occurs not from a cliff, but from the forward edge of a huge alien spacecraft moving toward you as you drive?

Q: What is the magnitude of Fn, the normal force on the box? P = 160 N f = 80 N 60° W = 196 N A) 196 N ...

A: Answer:- (A) 196 N  Given  Weight (W) = 196 N  Force (f) = 80 N  Force (P) = 160 N  Angel (A) = 60o ...

Q: A uniformly charged wire is 2.58 m long and 0.15 mm in diameter. You measure the electric field 1.20...

A: Given that:- Electric field due charges wire=543kN/C

Q: Calculate the force of gravity of a 30 kg block resting on the earth (mass of earth = 5.97X10^24 kg)...

A:

Q: 6. A resistor with a resistance of 10 ohms is connected in series with a capacitor of 50 microFarad ...

A: Given: R = 10 ohmC = 50 μF = 50*10-6 FV = 100 Vf = 100 Hz

Q: baseball is hit at a speed of 42 m/s at an angle of 35 degrees above the horizontal. The ball is cau...

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Q: In the Olympic shotput event, an athlete throws the shot with an initial speed of 13.0 m/s at a 43.0...

A:

Q: a) - 1 attachment - 7. The motion of a particle starting from rest is governed by the a-t curve show...

A:

Q: 4. A certain material which is 12 m long vertically hanging and supports a load of 2100 N, determine...

A: Length (L) = 12 m Load (F) = 2100 Nmaximum stress = 150 MPa Total elongation (∆L) = 6 mmYoung's modu...

Q: 4, Find increase in speed of a car which starts with an initial speced of 20 km/h and accelerates at...

A: Given initial speed u=20km/h Acceleration a=2m/s2 Time t=20s We have to find final speed v=?  

Q: A5-kg concrete block is lowered with a downward acceleration of 2.8 m/s? by means of a rope. The for...

A:

Q: Answer the following question given the position and charge of three charged objects. q1 = 2nC (-2,3...

A:

Q: 7. In an AC circuit there are two devices connected in series. If the current in the circuit and the...

A: Given that:- Two device connected in series.

Q: 2. Find the electric force between two electrons separated by distance of 10cm.(The charge electron ...

A: Two electron having charge, q = 1.6×10 C distance separated by, d = 10 cm

Q: 5. The velocity of a car at any time t is given by the equation: v = 60 m/s + (0.50 m/s³)t? (a) Find...

A: Acceleration is the rate of change of velocity a = dv/dt 

Q: 2. A crate with mass m, =10 kgs and a block with mass m, = Ignoring the masses of the pulley and the...

A:

Q: TOPIC: KINEMATICS OF PARTICLE Jammy is running at 5m/s to catch the Robert’s bus, which is stopped ...

A: We can use kinematics equation to solve the problem v = u + at. v² = u² + 2as. s = ut + ½at²

Q: 2. A diverging lens has a focal length of 60cm. What are the location, size and nature of the image ...

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Q: Find the solution (equation for the displacement of the fixed mass) to the following system: Start w...

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Q: A boat goes 6 miles downstream in a river in 30 minutes and return upstream in 45 minutes. Determine...

A:

Q: If a net horizontal force of 132 N is applied to a person with mass 60 kg who is resting on the edge...

A: Given: Mass of person(m) = 60kg Net force applied (F) = 132N

Q: A fly ball is hit to the outfield during a baseball game. Let’s neglect the effects of air resistanc...

A:

Q: block of mass 144 kg lies on a horizontal plane. A horizontal force F of magnitude 1100 N is applied...

A:

Q: Two blocks A and B are released from rest on a 30° incline when they are 50 ft apart. The coefficien...

A: Given that:- Angle of inclination=30°

Q: A ball whirls around on the end of a string, moving in a circle at a constant speed of 3.0 m/s. If i...

A: for a circular motion acceleration =v2R

Q: A starter motor on a motorcycle has an equivalent resistance of 0.15 Ω and is supplied by a 12 V bat...

A:  Given resistance R  = 0.15ohm  Internal resistance r =0.012ohm We have to find the value of current...

Q: A barber raises his customer’s chair by applying a force of 100N to a hydraulic piston of area 0.01 ...

A: Given data: Force on chair F1 = 100 N Area of hydraulic piston A1 = 0.01 m2 Area of new piston attac...

Q: a) We write that, the electric field reigning in between the plates of a parallel plate capacitor, i...

A:

Q: Assume that you have a voltage source of 31 V and three resistors: Resistor A is 9.5 Ω, Resistor B i...

A:

Q: The thrust of the Falcon Heavy rocket at launch is around 23 million Newtons. Calculate how far apar...

A:

Q: What is that current going into any point in a dc circuit is the same as the current going out? Kirc...

A:   It is Kirchoff 's  first law . According to - Kirchoff 's  1st law - sum of current entering at an...

Q: Compute for the total capacitance shown in the illustration. 5.0 μΕ 1.5 uF 8.0 µF 3.5 μΕ 0.75 uF 15 ...

A: Given:

Q: (a) How much potential energy does the ball have before it is dropped? 4.39 A 6.0 kg ball is dropped...

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Q: A 24 kg box sits on the floor. The static coefficient of friction is 0.24. What is the approximate s...

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Q: TOPIC: KINEMATICS OF PARTICLE Rafael Joshua wants to test how fast can Supergirl save him if he jum...

A:

Q: 4/You travel northeast (i.e 45) at 2.0mls for 10s, Then travel Southeast (i.e, at -45°) at He sane s...

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Q: 3. A winch has a moment of inertia of 10.0 kg-m?. Two masses m, = 5kgs and m2 = 2kgs are attached to...

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Q: Situation: You are driving when suddenly you saw a cat crossing across the street You applied the br...

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Q: 4, Find increase in speed of a car which starts with an initial spced of 20 km/h and accelerates at ...

A: Given value--- acceleration = 2 m/s2   Initial speed = 20 km/h. time = 20 sec. We have to find--- ...

Q: For the following parts, use the fact that when an object is moving at constant velocity, position s...

A: For the given plot or y vs x, the slope of the graph or the proportionality factor, y = CxC is the p...

Q: 1. A free electron has the wavefunction p(x, t) = sin(kx – wt) and wave number k = 50nm-1 1.1 Determ...

A: given: ψ(x,t) = sin(kx-ωt)k=50 nm-1=50*109  m-1

Q: An SUV travels a 1.30 km levelled road from Bonifacio Rotunda to Citylights Hotel ig a minimum time ...

A:

Q: How to calculate the average mass loss with 2 different mass loss at the same time(both of the two m...

A:

Q: Find increase in speed of a car which starts with an initial speed of 20 km/h and accelerates at 2 m...

A: Here, we calculate the given as follow;

Q: Top secret crates used for shipping blankets are released down an incline at point A with a speed of...

A:

Q: The velocity of a particle changes from -8 fps to 58 fps during a 15-sec interval during which its a...

A:

Q: A starter motor on a motorcycle has an equivalent resistance of 0.15 Ω and is supplied by a 12 V bat...

A: The EMF of the battery E=12 V and its internal resistance r=0.012 ohms which is connected to an equi...

Q: A force P pulls on a box of mass m that is in contact with a rough surface. The figure shows the mag...

A: Here from the given free body diagram, we have two components of applied force P→one is P.cos60° (=1...

Q: In the Olympic shotput event, an athlete throws the shot with an initial speed of 13.0 m/s at a 43.0...

A:

Q: Situation 05. In a science experiment, a test object is launched by accelerating it along a 200- met...

A:

Q: 5) A stone is thrown vertically upward from the ed ge of a roof 20.0 meters high. Initial velocity i...

A: Given value--- initial speed = 12 m/s. height of roof = 20 m. We have to find--- Find time to hit...

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.