HELP! Multiple choice please choose the correct one :) Thanks you in advance. 1)

Question

HELP! Multiple choice please choose the correct one :) Thanks you in advance.

1)A rigid body rotates about a fixed axis with constant angular acceleration. which one of the following statements is true concerning the tangential acceleration of any point on the body.

a) the tangential acceleration is zero m/s^s

b) the tangential acceleration depends on the angular velocity

c) the tangential acceleration is equal to the centripetial acceleration

d) the tangential acceleration is constant in both magnitude and direction

e) the tangential acceleration depends on the change in the angular velocity

2) which one of the following statements is true concerning an object executing simple harmonic motion?

a) the objects velocity is never zero

b) the objects acceleration is never zero

c) the objects velocity is zero when its acceleration is a maximum

d)  the objects velocity and acceleration are simulataneously zero

e) the object's maximum acceleration is equal to its maximum velocity

3)a 4.0 microcoloumb charge is located 0.30m to  the left of a +6.0 microcoloumb. what is the magnitude and direction of the electrostatic force on the +6.0microcoloumb charge

a) 2.4N to the right

b)2.4N to the left

c) 4.8N  to the right

D)4.8 N to the left

4) a parallel plate capacitor has pltes of area 2.0 * 10^-3 m^2 and plates separation 1.0 * 10^-4m. Determine the capacitance of this system if air fills the volume between the plates?

a)1.8 * 10^-10 F

b)1.1 *10^-10 F

c)3.2*10^-10 F

d)4.4*10^-10 F

5) A 3.0microfarad capacitor is connected in series with a 4.0micro farad capacitors and  a 48 v battery. what quanitiy of charge is supplied by the battery to charge the capacitors

a) 3.4 * 10^-4 C

b)7.3 * 10^-4C

c)3.0 * 10^-5C

d)8.2 * 10^-5C

e)1.8*10^-6C

6)How much energy is stored in the combination of capacitors? See image attached

100V battery connected to 4microfarad and 2microfarads straight across each other

a) 0.01 J

b) 0.02 J

c)0.03 J

d)0.04J

e)0.05J

7) 5 resistors are connected as shown in the diagram Image attached

what is the equivalent resistance between points A and B

a) 1.5 W

b) 4.8W

c) 7.5W

d) 9.4W

e)11W

8).A long straight wore carries a 6.0 A current that is directed in the positive x direction. When a uniform magnetic field is applid perpendicular to a 3.0 m segment of the wire the magnetic force on the segment is 0.36 N, directed In the negative y direction as shown. What are the magnitude and direction of the magnetic field.

a) 0.020 T out of paper

b) 0.060 T out of paper

c)0.065 T out of paper

d)0.020 T into paper

e) 0.060T into the paper

9) Which of the following statement concerning the magnetic force on a charge particle in a magnetic field  is true?

a) it depends on the component of the particle's velocity that is perpendicular to the field

b)it is zero if the particles moves perpendicular to the field

c) it is a maximum if the particle moves parallel to the field
d) it acts in the direction of motion for a positvely charged particle

e) it is maxmimum if the particle is stationary

10) A long straight wire is in the same plane as recantangular , conducting loop. the wire carries a constant current I as show in the figure below. which of the following staterments aare true if the wire suddenly moved away from the loop?

a) there will be no induced emf and no induced current

b) there will be an induced emf but noinduced current

c) the will be and induced emf current that is counter clockwise around the loop

d) the will be and induced  current that is clockwise around the loop

e) there will be an induced electric field that is clockewise around the loop

11) An object 2.0 cm in height is placed at the center of a curvature c in front of a concave mirror what is the height of the image.

a) -0.50 cm

b)-1.0cm

c)-1.5 cm

d)-2.0cm

e)-6.0cm

A rigid body rotates about a fixed axis with constant angular acceleration. which one of the following statements is true concerning the tangential acceleration of any point on the body. the tangential acceleration is zero m/s^s the tangential acceleration depends on the angular velocity the tangential acceleration is equal to the centripetial acceleration the tangential acceleration is constant in both magnitude and direction the tangential acceleration depends on the change in the angular velocity which one of the following statements is true concerning an object executing simple harmonic motion? the objects velocity is never zero the objects acceleration is never zero the objects velocity is zero when its acceleration is a maximum the objects velocity and acceleration are simulataneously zero the object's maximum acceleration is equal to its maximum velocity a 4.0 microcoloumb charge is located 0.30m to the left of a +6.0 microcoloumb. what is the magnitude and direction of the electrostatic force on the +6.0microcoloumb charge 2.4N to the right 2.4N to the left 4.8N to the right 4.8 N to the left a parallel plate capacitor has pltes of area 2.0 * 10^-3 m^2 and plates separation 1.0 * 10^-4m. Determine the capacitance of this system if air fills the volume between the plates? 1.8 * 10^-10 F 1.1 *10^-10 F 3.2*10^-10 F 4.4*10^-10 F A 3.0microfarad capacitor is connected in series with a 4.0micro farad capacitors and a 48 v battery. what quanitiy of charge is supplied by the battery to charge the capacitors 3.4 * 10^-4 C 7.3 * 10^-4C 3.0 * 10^-5C 8.2 * 10^-5C 1.8*10^-6C How much energy is stored in the combination of capacitors? See image attached 100V battery connected to 4microfarad and 2microfarads straight across each other 0.01 J 0.02 J 0.03 J 0.04J 0.05J 5 resistors are connected as shown in the diagram Image attached what is the equivalent resistance between points A and B 1.5 W 4.8W 7.5W 9.4W 11W A long straight wore carries a 6.0 A current that is directed in the positive x direction. When a uniform magnetic field is applied perpendicular to a 3.0 m segment of the wire the magnetic force on the segment is 0.36 N, directed In the negative y direction as shown. What are the magnitude and direction of the magnetic field. 0.020 T out of paper 0.060 T out of paper 0.065 T out of paper 0.020 T into paper 0.060T into the paper Which of the following statement concerning the magnetic force on a charge particle in a magnetic field is true? it depends on the component of the particle's velocity that is perpendicular to the field it is zero if the particles moves perpendicular to the field it is a maximum if the particle moves parallel to the field it is maxmimum if the particle is stationary A long straight wire is in the same plane as recantangular , conducting loop. the wire carries a constant current I as show in the figure below. which of the following staterments a are true if the wire suddenly moved away from the loop? there will be no induced emf and no induced current there will be an induced emf but noinduced current the will be and induced emf current that is counter clockwise around the loop there will be an induced electric field that is clockewise around the loop An object 2.0 cm in height is placed at the center of a curvature c in front of a concave mirror what is the height of the image. -0.50 cm -1.0cm -1.5 cm -2.0cm -6.0cm

Explanation / Answer

1. B

2. A

3. D

4. C

5. E

6. A

7. C

8. A

9. B

10. D

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