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What will be the final result when equal masses of ice at -20°C and steam at 120°C are mixed together?

temperature of final mixture °C

fraction of final mixture in solid form

fraction of final mixture in liquid form

fraction of final mixture in gaseous form

A 6.8 cm diameter pipe gradually narrows to 4.0 cm. When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 34.0 kPa and 24.0 kPa, respectively. What is the volume rate of flow?

____m^3/s

Estimate the number of air molecules in a room of length 6.0 m, width 2.0 m, and height 4.0 m. Assume the temperature is 20°C. How many moles does that correspond to?

___mol

A concrete highway is built of slabs 18 m long (20°C). How wide should the expansion cracks be (at 20°C) between the slabs to prevent buckling if the range of temperature is -30°C to +32°C?

____cm

A circular loop in the plane of the screen lies in a 0.83 T magnetic field pointing into the screen. If the loop's diameter changes from 19.0 cm to 6.0 cm in 0.50 s, determine the following.

(a) What is the magnitude of the average induced emf?

___mV

(c) If the coil resistance is 2.5 , what is the average induced current?

____mA

Any help greatly appreciated.

A power line carries a current of 95 A along the tops of 9.0 m high poles. What is the magnitude of the magnetic field produced by this wire at the ground?

_____T

How does this compare with the Earth's field of about 1/2 G?

I got the first part of the problem 2.11e-6 but i'm not sure how to solve the second part.

A doubly charged helium atom whose mass is 6.6 x10-27 kg is accelerated by a voltage of 2400 V.

(a) What will be its radius of curvature if it moves in a plane perpendicular to a uniform 0.369 T field?

__m

(b) What is its period of revolution?

__s

A 6.0 MeV (kinetic energy) proton enters a 0.24 T field, in a plane perpendicular to the field. What is the radius of its path?

__m

Any help is much appreciated. Thank You

How would you propagate the uncertainty of R-equivalent with

R=37.64 ohms

R1=0.199 ohms

R2=.0067 ohms

Any help would be greatly uppreciated.

How does the resistance of a circuit depend on the temperature? Thanks for any help

A parallel-plate capacitor with plate area 4.0 cm^2 and air-gap separation 0.40 mm is connected to a 12 V battery, and fully charged. The battery is then disconnected.

(a) What is the charge on the capacitor?

C

(b) The plates are now pulled to a separation of 0.90 mm. What is the charge on the capacitor now?

C

(c) What is the potential difference across the plates now?

V

(d) How much work was required to pull the plates to their new separation?

J

A cardiac defibrilator is used to shock a heart that is beating erratically. A capacitor in this device is charged to 6000 V and stores 200 J of energy. What is its capacitance?

µF

If a capacitor has opposite 3.8 µC charges on the plates, and an electric field of 2.0 kV/mm is desired between the plates, what must each plate's area be?

m2

How much charge flows from each terminal of a 36.0 V battery when it is connected to a 6.90 µF capacitor?

µC

A proton (m = 1.67 10-27 kg) is suspended at rest in a uniform electric field E. Take into account gravity at the earth's surface, and determine E.

Thanks for your time.

Calculate the electric field at one corner of a square 1.00 m on a side if the other three corners are occupied by 3.65x 10-6 C charges.

Thanks for your time.

The electric field midway between two equal but opposite point charges is 879 N/C, and the distance between the charges is 12.9 cm. What is the magnitude of the charge on each?

I tried using the equation E=kQ/r2 where Q= E*r2/k. However the answer I got wasn't right. Any suggestions on how to do this problem. Thanks for your time.

The electric field midway between two equal but opposite point charges is 879 N/C, and the distance between the charges is 12.9 cm. What is the magnitude of the charge on each?

I tried using the equation E=kQ/r2 where Q= E*r2/k. However the answer I got wasn't right. Any suggestions on how to do this problem. Thanks for your time.

Need help propagating the uncertainty using coulumbs law.

solve for u{q1*q2/r^2}

q1=9.6e-10 C

q2=4.8e-9 C

r=8.0cm

uncertainty given in (microcoloumbs/meters)^2

Three positive particles of equal charge, +12.0 µC, are located at the corners of an equilateral triangle of side d = 13.0 cm.

Calculate the magnitude and direction of the net force on each particle.

Net force on Q1

Magnitude

N

Direction

° (counterclockwise from the +x axis is positive)

Net force on Q2

Magnitude

N

Direction

° (counterclockwise from the +x axis is positive)

Net force on Q3

Magnitude

N

Direction

° (counterclockwise from the +x axis is positive)

I got the direction for the three as 90,210, and 330 degrees respectively but I can't firgure out the magnitude.