Need help with these last physics questions please. thank you :)?

Question

Objects acquire a charge through the transfer of:

Neutrons

Protons

Electrons

Photons

2: The weight of an object depends on _______ and the ______ of the object.

Acceleration due to gravity, velocity

Acceleration due to gravity, mass

Velocity, position

Velocity, charge

3: Two charges are separated by 3.0 cm. Object A has a charge of +6.0 micro-coulombs and object B has a charge of +3.0 micro-coulombs. What is the force on object A?

2.6 x 102 N in the x direction

2.6 x 102 N in the y direction

1.8 x 102 N in the x direction

1.8 x 102 N in the y direction

4: Which has the lowest energy?

Ultraviolet rays

Gamma rays

Radio waves

X-rays

5: In a parallel circuit, five resistors of values 20 ohms, 15 ohms, 5 ohms, 35 ohms, and 25 ohms are considered. What is the equivalent resistance of the entire circuit?

2.6 ohms

0.8 ohms

0.4 ohms

1.3 ohms

6: The sum of the electric potential difference around a closed loop circuit is zero. This is called:

Ohm’s law

Kirchoff’s voltage law

Coulomb’s law

Newton’s 2nd law

7: Absolute zero is also:

0 F

0 C

-273.15 C

-273.15 F

8: The rate of doing work is called:

Force

Velocity

Current

Power

9: In a series circuit, four resistors of values 75 ohms, 10 ohms, 20 ohms, and 15 ohms are considered. What is the equivalent resistance of the entire circuit?

210 Ohms

2.25 x 105 Ohms

60 Ohms

120 Ohms

10: A punter whishes to kick a ball as far as he can. His kick should be closest to what angle to achieve this:

30o

45o

60o

None of the above

Answer 1

ill tell u some >.)

no.1

electron if im not wrong

no. 7

answer is -273.15 C

no. 8 power

im too lazy to read the rest

good luck

Answer 2

1-electrons

2-acceleration due the gravity ----mass

3-F= 1/3 micro N

4-Radio waves

5-0.8

6-Kirchof"s voltage law

7-(-273.15 C)

8-power

9-120 ohms

10- 45 (0)

Answer 3

Objects acquire a charge through the transfer of:

Electrons

2: The weight of an object depends on _______ and the ______ of the object.

Acceleration due to gravity, mass

3: Two charges are separated by 3.0 cm. Object A has a charge of +6.0 micro-coulombs and object B has a charge of +3.0 micro-coulombs. What is the force on object A?

1.8 x 10^2 N in the y direction (repulsion)

4: Which has the lowest energy?

Radio waves

5: In a parallel circuit, five resistors of values 20 ohms, 15 ohms, 5 ohms, 35 ohms, and 25 ohms are considered. What is the equivalent resistance of the entire circuit?

2.6 ohms

6: The sum of the electric potential difference around a closed loop circuit is zero. This is called:

Kirchoff’s voltage law

7: Absolute zero is also:

-273.15 C

8: The rate of doing work is called:

Power

9: In a series circuit, four resistors of values 75 ohms, 10 ohms, 20 ohms, and 15 ohms are considered. What is the equivalent resistance of the entire circuit?

120 Ohms

10: A punter whishes to kick a ball as far as he can. His kick should be closest to what angle to achieve this:

45o

Answer 4

(1)Electrons

(2)Acceleration due to gravity, mass

(3)F=K q1 q2 \ d^2

k is coulomb's constant =  Nm^2\C^2

the charge is measured in micro coulombs so you convert to coulombs by multipling by 10^ -6

and convert centimeters to meters by multipling by 1\100

F=(9*10^9)*(6*10^ -6)*(3*10^ -6) \ (0.03)^2 =180 N =1.8 x 102 N in the y direction

(4)Radio waves

  

(5)It's parallel circuit so 1\R' = 1\R1 + 1\R2 + 1\R3 + 1\R4 + 1\R5

1\R' = 1\20+ 1\15+ 1\5 +1\35 +1\25=809\2100

so R' = 2100\809 =2.596 ohms approximatley 2.6 ohms

(6)Kirchoff’s voltage law

(7)-273.15 C   (As K = C + 273)

(8)Power

(9)series circuit R' = R1 + R2+ R3+ R4 =75+10+20+15 = 120 Ohms

(10) 45°