Two ice skaters stand together as illustrated in Figure (a). They "push off" and travel directly away from each other, the boy with a velocity of v = +0.42 m/s. If the boy weighs 718 N and the girl 450 N, what is the girl's velocity after they push off? (Consider the ice to be frictionless.)

Q: 8. A diffraction grating with 4000 lines/cm is used with white light. Find the width of the first…

A:

Q: The magnitude of the electric field across the membrane due to the opposite sign charges is 1*10^7…

A: The objective of the question is to calculate the energy density of the electric field across a…

Q: What is the sign and magnitude of a point charge that produces a potential of -2 V at a distance of…

A: Given:- The electric potential produced by the point charge is V = -2 V The distance at which the…

Q: length of copper wire has a uniform cross-sectional area of 1.0 mm2. Assume that the drift velocity…

A:

Q: Kilauea in Hawaii is the world's most continuously active volcano. Very active volcanoes…

A: The objective of this question is to calculate the time it takes for the rock to follow its path and…

Q: Calculate the magnitude of the electric field at one corner of a square 1.82 mm on a side if the…

A:

Q: You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m…

A: The objective of the question is to find the speed of the tennis ball when it is at a height of 2.2…

Q: Let’s practice drawing some vectors. One the axes below, start at the origin and draw the given…

A: Vx = - 4Vy = 4

Q: A long pipe of outer radius R₁ = 3.00 cm and inner radius R₂ = 2.55 cm carries a uniform charge…

A:

Q: Three charges are placed at the corners of a square of side 40 cm with 1.0 µC at (0.00 m, 0.00 m),…

A: Charges placed at the corners of a square of side Charge  is placed at Charge  is placed at Charge…

Q: Suppose water is raised by capillary action to a height of 8.85 cm in a glass tube. Refer to the…

A:

Q: The figure below shows a section of a very thin, very long, straight rod with a uniform charge per…

A: A uniform charge per unit length is The perpendicular distance between the wire and the center of…

Q: The position of an object is given by x = At + Bt², where is in meters and t is in seconds. Part A…

A:

Q: An aluminum wire 1.291 mm in diameter (16-gauge) carries a current of 4.5 amps. Overall Hint Review…

A:

Q: Hypothesis of shadow light and identity the dependent and independent variable

A:

Q: (a) Will the electric field strength, E, between two parallel conducting plates exceed the breakdown…

A:

Q: An infinitely long cylindrical conducting shell of outer radius r1 = 0.10 m and inner radius r2 =…

A: The objective of the question is to find the new surface charge densities on the inner and outer…

Q: A displacement vector in the xy plane is 78.0 m long and directed at angle 0 = 32.0° in the figure.…

A:

Q: A large rock is dropped from the top of a high cliff. Assuming that air resistance can be ignored…

A: The objective of the question is to find out the speed of the rock 6 seconds after it is dropped…

Q: All the asnwers were wrong, they have to be in meters no milimeters

A: a) The electric potential due to a point charge is given by V = kq/r, where k is Coulomb's constant,…

Q: An electric field of magnitude 2.68 kN/C is applied along the x axis. Calculate the electric flux…

A: Electric field is  directed towards x-axis.Length of rectangular plane is Width of rectangular plane…

Q: A +4.2×10-⁹ C charged object is 6.2 cm along a horizontal line toward the right of a -3.0x10-9 C…

A:

Q: Preliminary Questions Draw your predictions for each case below of how you think the electric field…

A: Here the lines with arrows are electric field lines and the lines with out arrows are equipotential…

Q: 10. The speed of sound in air is 343.2 m/s at 20 °C. You design experiments using three different…

A: Required to find the trial with good precision and poor accuracy

Q: h <<a, b. The capacitor has a charge Q. The space between the plates is initially vacuum and we…

A:

Q: Suppose a circular plate made of foam board (an electrical insulator) is held in contact with the…

A: Given : The circular electric board (an electric insulator ) is held in contact with dome of a van…

Q: The two successive harmonic frequencies of a 0.45 m long sound pipe are 929 Hz and 1300 Hz. a) Is…

A: The objective of the question is to determine whether the pipe is open at both ends or only at one…

Q: A plastic ball and glass marble are given uniformly distributed surface charges of -2 nC and +2 nC,…

A:

Q: • An object of mass 2kg is attached to the hooks of a spring balance and the later is suspended…

A:

Q: According to Boyle's, when volume increases, pressure decreases. [Choose ]

A: According to boyle's when volume increases, pressure decreases.

Q: An African fish called the aba has a charge q = +1.2 × 10-² C at its head and an equal magnitude…

A:

Q: • In the figure below, the circle represents an equipotential surface. Which vector represents an…

A: Electric field lines and equipotential surfaces are always perpendicular to each other. Electric…

Q: 28. ** Two small spheres with charges q₁ =+ 8 nC and q2 =- 4 nC are placed at marks x₁ = 2 cm and x₂…

A:

Q: Moonshine flows through a 1.00 inch diameter pipe at 0.075m/s. This pipe joins up to another pipe…

A:

Q: Based on a grade 11 physics student, answer the following question: Mr.T was riding the OCTranspo…

A: Mr. T's mass (m) = 114 kgInitial velocity  = 61 km/h = 61 * (5/18) m/s = 17 m/s (converted to…

Q: A proton 2.0 mm above the center of a 5.0 cm x 5.0 cm electrode experiences a force of 0.28 pN…

A: Given:Area of electrode is A= Charge on a proton Force F= We need to find the charge on the…

Q: suppose eratosthenes results for earth's circumference were quite accurate if the diameter of the…

A: To find the length of Eratosthenes's stadium, we divide the circumference of the Earth by the number…

Q: The world record for the 500-meter dash is held by David Rudisha and is 57.69 s A. Assuming that…

A: Distance traveled (d) = 500 mTime taken (t) = 57.69 sRunning one lap on the circular…

Q: A soccer ball is kicked horizontally at v0 = 13 m/s from a hill. The hill forms an angle \theta = 23…

A:

Q: **12. The positions of objects A and B are graphed at right. Answer the following questions and…

A:

Q: A nonuniform wire of length L and mass M has a variable lin- ear mass density given by = kx, where x…

A:

Q: Why is Vc = 1.5 *Vs?

A: Vcs

Q: 532 nm light is used on a 10.8 cm air wedge  to measure the thickness of a grain of sand. The…

A: Wavelength of light: 532 nm (nano-meters) = 532 x 10-9 metersAir wedge thickness: 10.8 cm…

Q: Show, using dimensional analysis, how many weeks there are in 259 days.

A: Total days = 259 daysWeeks = ?

Q: You What is the anion radius in nm approximated to 3 decimals if the force of attraction between A+2…

A: Radius of cation (A2+) = 0.016 nm = 0.016 nm x 10-9 m/nm = 1.6 x 10-11 mRadius of anion = X m =…

Q: Consider a positive charge Q₁ of magnitude 9 µC fixed at the origin with another positive charge Q₂…

A:

Q: For the following vector, convert from magnitude and direction to x and y coordinates r = 6, 0 =…

A: The objective of the question is to convert a vector from polar coordinates (magnitude and…

Q: An infinite plane of charge with surface charge density 4.6 μC/m² has a 20-cm-diameter circular hole…

A: Surface charge density is Diameter of circular hole is Note:Permittivity of free space is…

Q: The following charges are located inside a submarine: 6.20 μC, -9.00 μC, 27.0 μC, and -78 μC. (a)…

A:

Q: 3. Sound with a frequency of 468 Hz and a wavelength of 4.7 m moves through a material. What is the…

A: Frequency (f) = 468 HzWavelength (λ) = 4.7 m