Express F as a vector in terms of the unit vectors i, j, and k. Determine the projection, both as a scalar and as a vector, of F onto line OA, which lies in the x-y plane.

Q: The 8 kg, 37-cm diameter disk in the figure is spinning at 421 rpm. How much friction force must the...

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Q: A weight of 450 N falls from rest. Suppose the resistance of the air is proportional to the speed an...

A: Given: The weight of the body W = 450 N. The limiting speed of the body v = 52.5 m/s.

Q: A certain line in the spectrum of the light from a nebula has a wavelength of 656 nm instead of the ...

A: Original wavelength of Nebula is given as, λ = 434 nm The wavelength of Nebula observed in laborator...

Q: Which dot diagram represents a possible state of motion for such an object? Option 1 O Option 2 Opti...

A: Given, Four forces on the object

Q: Three identical small spheres, each of weight 2 lb, can slide freely on a horizontal frictionless su...

A: The mass of each sphere is, m=2 lb. The initial speed of sphere B is, vB0=0. The initial speed of sp...

Q: A7. Please explain the correct answer. Thanks.

A: Given: The distance covered by the car d = 12 km. The time taken by the car t = 18 min.

Q: 4. A squre coil of wire with 800 turns and size a = 10.0 cm on each side, is held next to a long str...

A:   Note-Since we only answer up to 3 sub-parts, we will answer the first 3. Please resubmit the quest...

Q: A projectile of 45 kg fired from a gun has a speed of 640 m/s. The projectile explodes in flight, br...

A:               Let us consider the mass of the projectile fired from the gun be m and its speed be v....

Q: Two long straight current carrying wires both have currents of 28.7 A directed to the right. The wir...

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Q: CALCULATION

A: Specific heat of the Aluminum cAl=ccalmcal+cwmwtf-t0mmtm-tf=0.217 cal/g·°C50 g+1.00 cal/g·°C170 g30°...

Q: Consider a projectile launched at a height h feet above the ground and at an angle 0 with the horizo...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: A proton is released from rest in a uniform electric field of magnitude 346 N/C. (a) Find the electr...

A: The magnitude of the electric field is, E=346 N/C. The travelled time of proton is, t=1.96 s.

Q: Which dot diagram represents a possible state of motion for such an object? Option 1 Option 2 Option...

A: Given, Forces on the object

Q: in the space E(x,y;t)= az0.1cos(10πx)sin(6π109t-βy) (V/m). find H(x,y;t) and β electromagnetic theor...

A: Given, Electric field in space 

Q: Please explain the correct answer. Thanks.

A: Given: The mass of baseball is m=200 g. The initial velocity of baseball is u=30 m/s. The final vel...

Q: For the vector field ?(x,y,z) = < x+(y/z), sqrt(x^2+y^2), lnz > a)  Find curl F b)  Find d...

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Q: A comet is traveling in a highly eccentric orbit around a star.  When at its apoapsis 109 AU away fr...

A: The average distance of the comet from the star at its apoapsis is, r∘=109 AU×1.49×108 km1 AU      ...

Q: = 47 еxp N `2 ĦRT´ 2RT where dN, the number of particles having a velocity between v and v+dV, V vel...

A: Given       F(V)dV =4πM2πRT32v2 exp-mv22RT dv therefore, <V2>=∫0∞ V2F(V)dV =∫0∞V24πM2πRT32v2 e...

Q: Solve

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Q: A sphere of mass 7 kg is dropped fro rest from a height oh 2.8 m above the top of a spring of spring...

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Q: 6. Determine the angular acceleration of bar AB the instant after it is released from rest in the po...

A: Given information: The mass of the bar, m=15 kg The angle made by the bar with the horizontal, θ=30°...

Q: A 5 kg block is set into motion at a rough inclined plane by angle 30 with an initial speed of 8 m/s...

A: Part-a Given: The mass of the block m = 5 kg. The inclination angle of the incline θ = 30o. The ini...

Q: 1) Write Ohm’s Law2) A potentiometer is a variable resistor that can be adjusted given the needs of ...

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Q: A hoop of mass M = 3.50 kilograms (kg) and radius R = 12.5 centimeters (cm) is resting on a flat sur...

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Q: Find spring constant of an ideal spring with simple harmonic equation, x(t)=1.6m•sin(1 rad/s • t - 0...

A: The equation of Simple harmonic motion is, x(t)=1.6 m·sin(1 rad/s·t-0.5 rad)                        ...

Q: In the system in the figure, K, L and P blocks are connected to each other by a rope. Of the blocks ...

A: The movement of the block P depends on the movement of the other two blocks L and K. Since the block...

Q: Water is flowing through a pipeline shown on the right. The radii of the pipe at points 1 and 2 are ...

A: The velocity of the water at point 1 is, Q=A1v1v1=2.5×10-3π0.52   =3.18×10-3 m/s The velocity of the...

Q: Use images A-E below to choose free-body diagrams for the following physical situations at the insta...

A: Here, the car is skidding and slowing down on the application of brake. the skidding refers to the f...

Q: 1) We attach the mass m, to a larger mass m; (m, > m) by a rope that passes through a pulley of negl...

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Q: The mass m1 is free to rotate on a frictionless table. Mass m1 rotates at a constant speed in a circ...

A: Given: The radius of the circle in which the mass m1 rotates is r. Introduction: Newton's second law...

Q: 1. A force acting upon an object to cause a displacement is known as energy b. potential c. kinetic ...

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Q: An airplane's course is set at 24 °{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/M...

A: Resultant velocity v→pw=v→p+v→w=vp-sinθpi^+cosθpj^+vw-cosθwi^-sinθwj^=100 km/h-sin24°i^+cos24°j^+36 ...

Q: A person has density 1,010 kg/m3. Sea water normally has density 1,027 kg/m3. If a person floats in ...

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Q: A dog weighing 1.20 kg is standing at a 2.00 m high roof. The was pushed by a cat with vo 1.50 m/s d...

A: Given: The mass of dog is m=1.20 kg. The height of the roof is h=2.00 m. The initial velocity of do...

Q: The river runs straight north-south with a current 4mph south. You paddle straight from west to east...

A: Solution:   Given Data,     vp=Speed of person along the west-east =3 mph  vc=Speed of current along...

Q: A series circuit consists of ac source, a 90-ȍ resistor, a 0.80-H inductor, and an 80-ȝFcapacitor. T...

A: The resistance in the circuit is, R=90 Ω. The inductance in the circuit is, L=0.80 H. The capacitanc...

Q: A 0.7 ball falls down and hits the floor at a speed of 15 m/s. The ball then bounces back up at aspe...

A: From Newton's second law Average force = change in momentum/time 

Q: Show that the magnitude of the magnetic field produced at the center of a rectangular loop of wire o...

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Q: A thin film of thickness 187.5 nm and refractive index 1.6 is coated on plastic of refractive index ...

A: Given: The thickness of the film is 187.5 nm. The refractive index of the film is 1.6. The refractiv...

Q: 20. Please explain the correct answer. Thanks.

A: the man with the red pant will fly off because  CONSERVATION OF ANGULAR MOMENTUM L=Iω I =moment of i...

Q: Two 18.7 cm focal length converging lenses are placed 18.9 cm apart. An object is placed 54.3 cm in ...

A: Given: The focal length of the two lenses is 18.7 cm respectively. The distance between the two lens...

Q: 9) Current i flows in a wire that is oriented in the direction 31 + 4j'. The wire is in a magnetic f...

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Q: 6. A projectile is fired from a cliff 200 meter above the water at an inclination of 45" to the hori...

A: (a) differentiate the expression for height h w.r.t x and equate it to zero to determine the horizon...

Q: P2.128 The 5-cm by 5-cm by 3.6-m spar buoy from Fig. P2.126 has 2 kg of steel attached and has gone ...

A: We know that,Density of seawater, ρwater=1025 kg m-3 l= submerged length of sparWwood=Wood SG×Densit...

Q: plz don't copy the same wrong Ans. Dynamics subject

A: Let ω1 be defined as the angular velocity of the swinging hammer after impacting, and v0 be defined ...

Q: Show that the light from a source which is moving away from us with a speed of 0.6c has twice the wa...

A: We can use the relativistic Doppler Effect equation in this problem. For a source of light moving aw...