An airplane with an airspeed of 120 km/h has a heading of 30° east of north in a wind that is blowing toward the west at 30 km/h. What is the speed of the plane relative to the ground?

Q: What is the independent wave function for a particle in a box x=0,L

A:

Q: Two lightbulbs are designed for use with an ac voltage (rms) of 120 V. One lightbulb is rated at 60…

A:

Q: A convertible and a minivan leave a highway junction at the same time. The convertible travels west…

A:

Q: Is there a theoretical limit to the order of the spectrum you would be able to observe with your…

A: Yes, there is a limit which is set by nλ=900, because a transmission grating cannot transmit…

Q: Three identical particles, each with a charge of 32.0 uC, are held in place at the corners of a…

A:

Q: 27.4 -mH inductor and 6.07 -Ω resistor, together with a switch, are connected in series to an ideal…

A:

Q: i need to calculate the impuse of two runs. For run 1 my initial velocity for run 1 is -.5 m/s and…

A:

Q: . (II) A falling rock has kinetic energy KE just before striking the ground and coming to rest. What…

A: According to Mechanical energy conservation, Kinetic Energy + Potential Energy = Constant So, before…

Q: Pencil "lead" is actually carbon. Part A What is the resistance of the 0.650-mm-diameter,…

A:

Q: A car traveling at 25.0 m/s crashes into a brick wall. The front 1.00 meter of the car crumples, and…

A:

Q: For your science exhibit, you want to make a block of wood float at the nterface between a layer of…

A:

Q: A block of mass 4.9 kg is sitting on a frictionless ramp with a spring at the bottom that has a…

A: mass of block (m) = 4.9 kg spring constant (k) = 410 N/m θ = 19o

Q: A ball toy of mass 22.9 g is thrown straight up with an initial speed of 4.3 m/s. Neglect air…

A:

Q: i need to find the initial and final kinetic energy of the system before AND after collision. for…

A: In the elastic collision total momentum, the total energy and the total kinetic energy are…

Q: headaches while driving. What type of lenses would her eye doctor recommend to address this problem?

A:

Q: > The wires in figure are all made of the same material. 2L 4L 2L r 2r 2r 0 2r A B C D E Rank in…

A:

Q: An ice skater(3), mass 20 kg, is sliding on ice (frictionless). Two other ice skaters (1,2) come out…

A: F1 = 5 N @20 degree below the horizontal F2 = 8N@60 degree above the horizontal

Q: ressure inside this tire exerts forces parallel to all surface contacts.

A: pressure inside the tire exert perpendicular forces to  all surfaces in contact.

Q: The captain of a small plane starts his journey by proceeding east. The spee km/h. A sudden north…

A: GivenSpeed of the plane with respect to still air in east direction, vP→=160 i^ km/hSpeed of wind in…

Q: How much work is needed to stop a 1330 kg car that is moving straight down the highway at 15 m/s?

A: Given: mass of the car (m) = 1330Kg            Initial speed of the car (u) = 15 m/s…

Q: Find the value of work done Force=0.011 N Displacement=0.2 m

A: Here given , Force (F) = 0.011 N Displacement (d) = 0.2 m Workdone (W) = ? We know formula, W = F*d…

Q: A boat floating in fresh water displaces water weighing 35.6 kN. What is the weight of the…

A:

Q: What is the volume when 3.20 kg of copper wires are melted, then cooled into a solid cube? [the…

A: Given that: Mass of copper wires m = 3.2 kg = 3200 g Density of copper wire ρ = 8.96 g/cm3 Let…

Q: 3. Consider the following three displacement vectors: Vector A has a magnitude of 3.30 km and a…

A: A→ = 3.30 km @35 degree north of west B→ = 7.40 km@12 degree south of east C→ = 4.30 km@47 degree…

Q: A vehicle is running with a velocity of 5m/s. If the momentum of the vehicle is 5000 kg m/s, what is…

A: Introduction :  In this question we are provided with value of velocity and momentum . With these…

Q: A 0.030-kg bullet is fired vertically at 600 m/s into a 0.15-kg baseball that is initially at rest.…

A:

Q: A conducting wire with a resistance of 20 Ω is melted and with that material another wire four times…

A: Given in question - Initial resistance(R) = 20 Ω                                 New length (L') =…

Q: The displacement from equilibrium of an object in harmonic motion on the end of a spring is given…

A: Given data as per question t = pi/10

Q: A toy gun fires rubber pellets (mass = 4.1 grams) at plastic targets (mass = 95 grams). A target is…

A:

Q: What is the direction of the magnetic field B at a point above the wire carrying a current as shown?…

A: Given: The direction of the current is in the left direction. The position of the point is above the…

Q: A basketball that was initially at rest is dropped by Simon from the window of his room. How far in…

A:

Q: Problem A dog can live 8 years. You want to see your dog when you are at 100 years old. And you are…

A: You see your dog at 8 year old, when it was 80 year disappear. so the proper time interval (to) = 8…

Q: Find the area Pressure=23.5 N/m2 Force=2.2 N

A:

Q: You push a supermarket cart 24.5 m at constant speed on level ground, against a 33.7 N frictional…

A:

Q: Q3/1 Find the difference State in Second and first excited energies (AE) of Particle 1-D with length…

A:

Q: What volume of copper (density 8.96 g/cm³) would be needed to balance a 2.57 cm³ sample of lead…

A:

Q: Consider the two vectors, A= 17x+11.5y, B= 4.5x-3.5y a. What is the magnitude of the vector 3A+B?…

A:

Q: A positively charged particle with Q - 5 mC is placed between two negatively charged particles with…

A:

Q: A train traveling initially at 16 m/s undergoes a constant acceleration of 2 m/s² in the same…

A:

Q: The 70-m microwave transmission tower is steadied by three guy cables as shown. Cable AB carries a…

A:

Q: You push your much-loved 3-kg physics book 1.01 m along a horizontal table top with a horizontal…

A:

Q: Three charges are moving to the right when they enter a region where there is a uniform B-field into…

A: If you hold out your thumb as if you're hitch-hiking, your thumb will point in the direction of the…

Q: B-Use the graphical method to find the magnitude and direction of the resultant of these forces. 60°…

A:

Q: You throw a 20-NN rock vertically into the air from ground level. You observe that when it is a…

A:

Q: 1.) The small piston of a hydraulic lift as shown in the figure has a cross-sectional of 3.00 x 104…

A: Given :  area of cross-sectional of small piston(A1) =3×10-4m2 area of cross-sectional of outer…

Q: 9. A horizontal force of 210 N pushes a 8 kg block up a frictionless incline that makes an angle of…

A:

Q: A student is able to isolate a single charged oil drop while performing a Millikan oil drop…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Two weights are hanging as shown in the figure. Draw a free-body diagram for the bottom weight

A: Given: The bottom is weight is w2. The top weight is w1.

Q: The sound waves travel with speed of 450 m/s. If is wavelength is 6 m. Calculate the frequency of…

A: Given in question - Speed of the sound waves(v) = 450 m/s…

Q: A force in the +x-direction with magnitude F(x)= 18.0 N (0.530 N/m) is applied to a 7.10 kg box that…

A:

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.