PHYSICS EXAM HELP NEEDED to anyone that can help with this exam- i would like de
ID: 1266846 • Letter: P
Question
PHYSICS EXAM HELP NEEDED
to anyone that can help with this exam- i would like detailed explanations on how to solve each problem so that when i come across a similar one during my exam, i know how to approach it. pictures of the work you have done, along with the formula(s) you chose, and any other tips/explanations (like why other answers would be eliminated asap) would be greatly appreciated. i will give as many points as i can possibly give out.
thanks in advance.
START:
a) positive, negative
b) negative, positive
c) smaller, larger
a) increases
b) decreases
c) does not change
a) increases
b) decreases
c) does not change
a) increases
b) decreases
c) remains the same
a) potential drop across, charge on
b) charge on, potential drop across
c) potential drop across, potential drop across
a) increases
b) decreases
c) remains the same
a) move in uniform circular motion
b) move in a straight line
c) come to rest
a) attract
b) repel
c) exert no force on
a) increases
b) decreases
c) remains the same
a) zero
b) a maximum
c) a minimum
a) sometimes
b) always
c) never
a) greater than
b) less than
c) equal to
Four charges are situated as shown in the diagram (each grid line is separated by 1 meter). The two upper charges have a charge of +2 ?C (+2?10-6 C). The two lower charges have a charge of -2 ?C (-2?10-6 C).
a) 0 N/C
b) 2,250 N/C
c) 3,182 N/C
d) 6,364 N/C
e) 9,000 N/C
a) -19,900 V
b) -9,950 V
c) 0 V
d) 9,950 V
e) 19,900 V
a) 0 J
b) 0.036 J
c) 0.144 J
d) 18,000 J
e) 72,000 J
A capacitor is constructed from two metal sheets placed 3 mm apart. The total capacitance is 13 pF (13?10-12 F). A battery is used to charge the capacitor to 7 nC (7?10-9 C). The positive and negative plates are shown:
a) 0.0014 m2
b) 0.0024 m2
c) 0.0034 m2
d) 0.0044 m2
e) 0.0054 m2
a) 180,000 V/m
b) 280,000 V/m
c) 380,000 V/m
d) 480,000 V/m
e) 580,000 V/m
A positively charged particle (with Q = +5 ?C) moves away (with v = 15 m/s) from a wire with current. At the instant shown, the charged particle is 18 cm from the current and the magnetic field there has a strength of 0.19 mT (0.00019 T).
a) 91 A
b) 111 A
c) 131 A
d) 151 A
e) 171 A
a) 1.4 x 10-8 N
b) 2.4 x 10-8 N
c) 3.4 x 10-8 N
d) 4.4 x 10-8 N
e) 5.4 x 10-8 N
A loop with a length of 8 cm and a width of 3 cm is moving (with a speed of v = 17 m/s) out of the magnetic field (with strength of 2.05 T) as shown below. The total resistance of the loop is 0.03 ohms.
a) 1.788 V
b) 2.788 V
c) 3.788 V
d) 4.788 V
e) 5.788 V
You are given the following circuit with V = 9 V, R1 = 5 ?, R2 = 10 ?, and C = 2 ?F (the switch has been opened for a long time):
a) 0 A
b) 0.6 A
c) 0.9 A
d) 1.8 A
e) 2.7 A
Calculate the current through the battery after the switch has been closed a long time.
a) 0 A
b) 0.6 A
c) 0.9 A
d) 1.8 A
e) 2.7 A
The following circuit has the values: V = 9 V,
C1 = 1 ?F, C2 = 2 ?F, C3 = 3 ?F, C4 = 4 ?F.
23) What is the charge on capacitor C1?
a) 1.09 ?C
b) 3.09 ?C
c) 5.09 ?C
d) 7.09 ?C
e) 9.09 ?C
24) What is the potential difference across capacitor C3?
a) 1.09 V
b) 2.09 V
c) 3.09 V
d) 4.09 V
e) 5.09 V
A simple RLC series circuit is connected to a generator with frequency 60 Hz. The maximum voltage across each element (the resistor, inductor, and capacitor) is measured along with the maximum current in the circuit. It is found that: VRmax = 22 V, VLmax = 35 V, VCmax = 27 V and Imax = 0.72 A.
25) What is the maximum voltage across the generator?
(a) 13.4 V
(b) 23.4 V
(c) 33.4 V
(d) 43.4 V
(e) 53.4 V
26) What is the inductance of the inductor?
(a) 99 mH
(b) 129 mH
(c) 159 mH
(d) 189 mH
(e) 219 mH
27) What is the average power dissipated in the circuit?
(a) 4.92 W
(b) 7.92 W
(c) 10.92 W
(d) 16.92 W
(e) 20.92 W
28) What is the resonance frequency of this RLC circuit?
(a) 13 Hz
(b) 33 Hz
(c) 53 Hz
(d) 73 Hz
(e) 93 Hz
Unpolarized light with a wavelength of 400 nm (400?10-9 m ) and an intensity of 4.6 W/m2 is incident on two linear polarizers.
29) What is the frequency of this radiation?
(a) 3.5 x 1014 Hz
(b) 5.5 x 1014 Hz
(c) 7.5 x 1014 Hz
(d) 9.5 x 1014 Hz
(e) 11.5 x 1014 Hz
30) If the intensity after the second polarizer is 0.9 W/m2, what is the angle between the transmission axes of the two polarizers?
(a) 31?
(b) 41?
(c) 51?
(d) 61?
(e) 71?
FORMULAS:
FINISH
p.s. please ignore the formatting errors. chegg is slightly unforgiving when it comes to copy and paste.
Explanation / Answer
a) positive, negative
b) negative, positive
c) smaller, larger
a) increases
b) decreases
c) does not change
a) increases
b) decreases
c) does not change
a) increases
b) decreases
c) remains the same
a) potential drop across, charge on
b) charge on, potential drop across
c) potential drop across, potential drop across
a) increases
b) decreases
c) remains the same
a) move in uniform circular motion
b) move in a straight line
c) come to rest
a) attract
b) repel
c) exert no force on
a) increases
b) decreases
c) remains the same
a) zero
b) a maximum
c) a minimum
a) sometimes
b) always
c) never
a) greater than
b) less than
c) equal to
Four charges are situated as shown in the diagram (each grid line is separated by 1 meter). The two upper charges have a charge of +2 ?C (+2?10-6 C). The two lower charges have a charge of -2 ?C (-2?10-6 C).
a) 0 N/C
b) 2,250 N/C
c) 3,182 N/C
d) 6,364 N/C
e) 9,000 N/C
a) -19,900 V
b) -9,950 V
c) 0 V
d) 9,950 V
e) 19,900 V
a) 0 J
b) 0.036 J
c) 0.144 J
d) 18,000 J
e) 72,000 J
A capacitor is constructed from two metal sheets placed 3 mm apart. The total capacitance is 13 pF (13?10-12 F). A battery is used to charge the capacitor to 7 nC (7?10-9 C). The positive and negative plates are shown:
a) 0.0014 m2
b) 0.0024 m2
c) 0.0034 m2
d) 0.0044 m2
e) 0.0054 m2
a) 180,000 V/m
b) 280,000 V/m
c) 380,000 V/m
d) 480,000 V/m
e) 580,000 V/m
A positively charged particle (with Q = +5 ?C) moves away (with v = 15 m/s) from a wire with current. At the instant shown, the charged particle is 18 cm from the current and the magnetic field there has a strength of 0.19 mT (0.00019 T).
a) 91 A
b) 111 A
c) 131 A
d) 151 A
e) 171 A
a) 1.4 x 10-8 N
b) 2.4 x 10-8 N
c) 3.4 x 10-8 N
d) 4.4 x 10-8 N
e) 5.4 x 10-8 N
A loop with a length of 8 cm and a width of 3 cm is moving (with a speed of v = 17 m/s) out of the magnetic field (with strength of 2.05 T) as shown below. The total resistance of the loop is 0.03 ohms.
a) 1.788 V
b) 2.788 V
c) 3.788 V
d) 4.788 V
e) 5.788 V
You are given the following circuit with V = 9 V, R1 = 5 ?, R2 = 10 ?, and C = 2 ?F (the switch has been opened for a long time):
a) 0 A
b) 0.6 A
c) 0.9 A
d) 1.8 A
e) 2.7 A
Calculate the current through the battery after the switch has been closed a long time.
a) 0 A
b) 0.6 A
c) 0.9 A
d) 1.8 A
e) 2.7 A
The following circuit has the values: V = 9 V,
C1 = 1 ?F, C2 = 2 ?F, C3 = 3 ?F, C4 = 4 ?F.
23) What is the charge on capacitor C1?
a) 1.09 ?C
b) 3.09 ?C
c) 5.09 ?C
d) 7.09 ?C
e) 9.09 ?C
24) What is the potential difference across capacitor C3?
a) 1.09 V
b) 2.09 V
c) 3.09 V
d) 4.09 V
e) 5.09 V
A simple RLC series circuit is connected to a generator with frequency 60 Hz. The maximum voltage across each element (the resistor, inductor, and capacitor) is measured along with the maximum current in the circuit. It is found that: VRmax = 22 V, VLmax = 35 V, VCmax = 27 V and Imax = 0.72 A.
25) What is the maximum voltage across the generator?
(a) 13.4 V
(b) 23.4 V
(c) 33.4 V
(d) 43.4 V
(e) 53.4 V
26) What is the inductance of the inductor?
(a) 99 mH
(b) 129 mH
(c) 159 mH
(d) 189 mH
(e) 219 mH
27) What is the average power dissipated in the circuit?
(a) 4.92 W
(b) 7.92 W
(c) 10.92 W
(d) 16.92 W
(e) 20.92 W
28) What is the resonance frequency of this RLC circuit?
(a) 13 Hz
(b) 33 Hz
(c) 53 Hz
(d) 73 Hz
(e) 93 Hz
Unpolarized light with a wavelength of 400 nm (400?10-9 m ) and an intensity of 4.6 W/m2 is incident on two linear polarizers.
29) What is the frequency of this radiation?
(a) 3.5 x 1014 Hz
(b) 5.5 x 1014 Hz
(c) 7.5 x 1014 Hz
(d) 9.5 x 1014 Hz
(e) 11.5 x 1014 Hz
30) If the intensity after the second polarizer is 0.9 W/m2, what is the angle between the transmission axes of the two polarizers?
(a) 31?
(b) 41?
(c) 51?
(d) 61?
(e) 71?
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