This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The velocity of a particle (m = 10 mg, q = -4.0 mC) at t = 0 is 20 m/s in the positive x direction. ... (Read 107 times)

LCritchfi

  • Hero Member
  • *****
  • Posts: 519
on: Jul 28, 2018
The velocity of a particle (m = 10 mg, q = -4.0 mC) at t = 0 is 20 m/s in the positive x direction. If the particle moves in a uniform electric field of 20 N/C in the positive x direction, what is the particle's speed at t = 5.0 s?
 a. 60 m/s
  b. 20 m/s
  c. 45 m/s
  d. 40 m/s
  e. 70 m/s

Question 2

A charge of 50-mC is placed on the y axis at y = 3.0 cm and a 77-mC charge is placed on the x axis at x = 4.0 cm. If both charges are held fixed, what is the magnitude of the initial acceleration of an electron released from rest at the origin?
 a. 1.2  1020 m/s2
  b. 1.5  1020 m/s2
  c. 1.0  1020 m/s2
  d. 1.8  1020 m/s2
  e. 2.0  1020 m/s2


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ashley I

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


LCritchfi

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Ashley I

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Positive regulation of the lac operon by the catabolite activator protein (CAP) Positive regulation of the lac operon by the catabolite activator protein (CAP)
Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation. Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation.
An H-bridge circuit is used to control the direction of the DC electric motor of the electronic ... An H-bridge circuit is used to control the direction of the DC electric motor of the electronic ...
Use a DMM set to read DC volts to check the voltage drop of the positive circuit to the fuel ... Use a DMM set to read DC volts to check the voltage drop of the positive circuit to the fuel ...
Structure of the nucleosome core particle as revealed by X-ray diffraction Structure of the nucleosome core particle as revealed by X-ray diffraction
The nucleosome core particle derived from X-ray crystal analysis The nucleosome core particle derived from X-ray crystal analysis
Video: Aneurysm

For a complete list of videos, visit our video library