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MF

Mahir F.

Physics 103

an hour ago

Find the number of atoms in a unit cell of NaCl structure

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Karen L.

Physics 103

4 hours ago

mA = 2mB, vAi = 0.5 m/s, vBi = 0. What is the velocity of the object A after the collision

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Mariam

Physics 103

None

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Carlos N.

Physics 103

7 hours ago

Show that the effective focal length of a sphere of radius R made of a material whose refractive index is n and surrounded by air is f = nR / (2 (n ? 1)). Show that the two principal planes coincide and cut the sphere in half.

CN

Carlos N.

Physics 103

7 hours ago

A thick lens is placed at the end of a fish tank containing a Transparent liquid whose refractive index is 1.420. The lens has surfaces of radii of curvature of R1 = +3.80 cm and R2 = ?1.90 cm, a thickness of 4.60 cm and is made of a glass whose index of refraction is 1.620. If R2 is in contact with the liquid, obtain (a) the front and back focal lengths, (b) the power of the lens. (c) Obtain also the distances from the vertices to the foci and to the respective main planes.

CN

Carlos N.

Physics 103

7 hours ago

An equiconvex lens 3.50 cm thick has radii of curvature of 5.20 cm and is made of a glass with refractive index n = 1.680. Calculate (a) the focal length of the lens and (b) the power of the lens. Obtain the positions of the principal planes and the distances of the vertices to the respective foci.

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Eli R.

Physics 103

8 hours ago

there was an example but part c was wrong, could someone else try, thanks. A grinding wheel 0.32 m in diameter rotates at 2800 rpm . then Calculate its angular velocity in rad/s. Express your answer using three significant figures. then What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. then What is the acceleration of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units.

ER

Eli R.

Physics 103

8 hours ago

An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.250 rev/s . The magnitude of the angular acceleration is 0.884 rev/s2 . Both the the angular velocity and angular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.700 m . then Compute the fan's angular velocity magnitude after time 0.192 s has passed. Express your answer numerically in revolutions per second. then Through how many revolutions has the blade turned in the time interval 0.192 s from Part A? Express the number of revolutions numerically. then What is the tangential speed vt of a point on the tip of the blade at time t = 0.192 s ? Express your answer numerically in meters per second. then Calculate the magnitude at of the tangential acceleration of a point on the tip of the blade at time t = 0.192 s . Express the acceleration numerically in meters per second squared. then Calculate the magnitude ar of the radial (or centripetal) acceleration of the point at the end of the fan blade.

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Jordyn J.

Physics 103

9 hours ago

a glider on a frictionless track attached to compressiable speinf is osicalled inder sinple harmonic morion. it has a magnitude of acceleration of 63.8 m/s2 at the moment it changes directions. it has an amplitide of 10.0 cm. with what frequency does it oscillate

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Kalyb S.

Physics 103

12 hours ago

Tarzan grabs a vine 12 m long and swings on the end of it, like a pendulum. His starting point is 5.0 m above the lowest point in his swing. a) How fast is Tarzan moving as he passes through the bottom of the swing (B)? b) TarzanÔÇÖs mass is 80 kg. Will the vine resist if the maximum withstanding tension is 1500N? c) If Tarzan jumps at point C (?=200) find the speed at that point and the Tension in the vine.

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Kimberly M.

Physics 103

13 hours ago

you exert a force of 80N by pulling on a cable to move a crate horizontally at a constant speed over a distance of 2 meters. the cable forms at an angle of 20 degrees with the horizontal. what is the magnitude of the equivalent force you would have to apply to move to move the crate if this force was applied horizontally

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Wanvisa K.

Physics 103

None

When water freezes, it expands by about 9.00 % . What pressure increase would occur inside your automobile engine block if the water in it froze? (The bulk modulus of ice is 2.00├Ś109N/m2.)

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Taif 0.

Physics 103

17 hours ago

A 10 g brass washer at 80┬░C is dropped into a container of 100 g of water initially at 20┬░C. Ignoring heat flow to or from the surroundings, will the equilibrium temperature be less than, equal to, or greater than 50┬░C

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Lefa L.

Physics 103

18 hours ago

A wave is traveling on a stretched string and it's wave function is given y(x, t) = 0.532 sin(10(3.14) -3(3.14)x+(3.14)/4). The quantities y, x and t are in SI units. Determine the speed of the wave

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Lefa L.

Physics 103

18 hours ago

The figure below shows a pipe through which water flows in the steady and ideal mode. The pressure and the pipe diameter at the lower point are P= 17.5 kPa and 60.0 mm, respectively. At the point you = 250 mm, the pipe diameter and the pressure are 30 mm and P= 12.0 kPa respectively. Compute the flow speed a) in the lower and upper sections, and b) the volume rate in the pipe. Density of water is 1000 kg/m^3

LL

Lefa L.

Physics 103

18 hours ago

The figure below shows a pipe through which water flows in the steady and ideal mode. The pressure and the pipe diameter at the lower point are P= 17.5 kPa and 60.0 mm, respectively. At the point you = 250 mm, the pipe diameter and the pressure are 30 mm and P= 12.0 kPa respectively. Compute the flow speed a) in the lower and upper sections, and b) the volume rate in the pipe. Density of water is 1000 kg/m^3

LL

Lefa L.

Physics 103

19 hours ago

A piano string has a density of 5├Ś10^-3 kg/m and is under a tension of 2305 N. Compute the speed af a wave that propagates on this string

LL

Lefa L.

Physics 103

19 hours ago

A gasoline engine has a piston which is in simple harmonic motion. The frequency of the engine is 3.6├Ś10^3 rev/min. Determine the magnitudes of the maximum acceleration and maximum velocity of the piston if the extremes of its position relative to its center point are +50 mm and -50 mm

LL

Lefa L.

Physics 103

19 hours ago

A gasoline engine has a piston which is in simple harmonic motion. The frequency of the engine is 3.6├Ś10^3 rev/min. Determine the magnitudes of the maximum acceleration and maximum velocity of the piston if the extremes of its position relative to its center point are +50 mm and -50 mm

MM

Maha M.

Physics 103

None

4. Fire the projectile launcher straight upwards (angle = 90 degrees) at 18 m/s . Calculate the time it should take the projectile to reach maximum height

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Lefa L.

Physics 103

20 hours ago

The figure below shows a ray of light (blue light) traveling from air (n= 1.000293) into a second medium making an angle of theta with the normal. Compute the magnitude of the angle theta if the angle of refraction is 38┬░ and the second medium is water (n= 1.333)

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Lefa L.

Physics 103

20 hours ago

An electron travels at speed of 50.2├Ś10^5 m/s in a direction that makes an angle of 60.00┬░ with the direction of magnetic field of magnitude of 180├Ś10^-3 T in the positive X direction. Determine the magnitude and direction of the magnetic force experienced by the electron. An electron has a charge of -1.602├Ś10^-19 C.

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Lefa L.

Physics 103

20 hours ago

A block is attached to a horizontal spring and undergoes simple harmonic motion. The mass of the block is 2.000 g and the period of its simple harmonic motion is 250 ms. Determine the spring constant and amplitude if the system has mechanical energy of 0.0035 kJ.

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Lefa L.

Physics 103

20 hours ago

Consider the charge distribution shown in the figure below. Find position, other than infinity, where the electric field is zero.

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Lefa L.

Physics 103

21 hours ago

The same potential difference is used to accelerate a proton and an electron. Afterward

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