Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
Determine the magnitude of the force between two parallel wires 26 m long and 6.8 cm apart, each carrying 21 A in the same direction.
Determine the direction of the force between two parallel wires 26 m long and 6.8 cm apart, each carrying 21 A in the same direction.
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A jumper cable used to start a stalled vehile carries a 83- A current.
How strong is the magnetic field 5.2 cm away from it?
Compare to the Earth,s magnetic field of 0.50 E-4 T.
The field of the cable is about--- times that of Earth.
Physics Modern Physics Level: Misc Level
What is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and magnetic fields of magnitude 8.0E3 V/m and 0.0048T, respectively?
What is the radius of the electron orbit if the electric field is turned off?
Enter your answer with 2 significant digits.
Physics Modern Physics Level: Misc Level
A 3.6- MeV (kineticenergy) proton enters a 0.100- T field, in a plane perpendicular to the field.What is the radius of its path?
Physics Modern Physics Level: Misc Level
Determine the magnitude and direction of the force on an electron traveling 8.85 E5 m/s horizontally to the east in a vertically upward magnetic field of strength 0.55 T. Magnitude: Direction:
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
The force on a wire carrying 7.90 A is a maximum of 1.61 N when placed between the pole faces of a magnet.If the pole faces are 55.0 cm in diameter, what is the approximate strength of the magnetic field?
Physics Magnetism,Magnetic Effects Of Current Level: Misc Level
A 2.50-m length of wire carrying 5.4 A of current is oriented horizontally. At that point on the Earth,s surface,the dip angle of the Earth,s magnetic field makes an angle of 45% to the wire. Estimate the magnitude of the magnetic force on the wire due to the Earth,s magnetic field of 5.5E-5 T at this point.
Physics Force & Laws Of Motion Level: Misc Level
Three boxes slide on a frictionless horizontal surface when pulled by a force of magnitude F. When we compare the tensions T1 and T 2 with the force F, we find that" Justify answer"
a) T1 =T 2=F b) T 1=F>T2 c) F> T1 =T2. d) F> T1>T2. e) F-T1 <T1-T2.
Physics Force & Laws Of Motion Level: Misc Level
a box is droped onto a conveyor belt moving at 2 m/sec. If the coefficient of friction between the box and the belt is 0.3, how long before the box moves without slipping?
Physics Force & Laws Of Motion Level: Misc Level
a 2000 kg sailboat experiences an eastward force of 3000 N by the ocean tide and a wind force against its sals of magnitude 6000 N directed toward the northwest( 45 degree north of west).What is the magnitude and direction of the resultant acceleration ? include a free body diagram in your solution.
Physics Properties Of Matter Level: Misc Level
The bulk modulus of a gas varies with pressure. In the case of the air, the bulk modulus of air is equal to 1.40 times its pressure. The atmospheric pressure at sea level is 1.01x105 N/m2. The density of air at sea level is 1.20 kg/m3. For these conditions, what is the speed of sound as it passes through the air?
a. 343 m/s
b. 328 m/s
c. 1.70 km/hr
d. 5280 ft/s
Physics Waves And Oscillations Level: Misc Level
In the following for SMH: represents:
Angular frequency
Amplitude of oscillation
Period of the wavefrom
Phase constant
Physics Waves And Oscillations Level: Misc Level
The intensity of sound at a given point is measured to be 0.0005 W/m2. What is the decibel level of the sound?
a. 97 dB
b. 55 dB
c. 87 dB
d. 90 dB
Physics Wave Optics Level: Misc Level
When a visible object is receding, its color will:
Not change in the slightest
Shift toward the blue end of the spectrum
Shift toward the red end of the spectruma
Physics Waves And Oscillations Level: Misc Level
When the amplitude of a pendulum decreases to half its initial value, the period will have:
a. Remained the same
b. Halved
c. Doubled
