1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anyanavicka [17]
4 years ago
14

If an electron is accelerated from rest through a potential difference of 1200V find its approximate velocity at the end of this

process. (qe = 1.6 x 10^-19 C; me = 9.1 x 10^-11kg)

Physics
1 answer:
kolbaska11 [484]4 years ago
8 0

Answer: 2.1 × 10^7 m/s

Explanation:

Please see the attachments below

You might be interested in
Electromagnetic radiation includes only visible light waves.<br><br> true or false
stealth61 [152]

The entire electromagnetic spectrum, from the lowest to the highest frequency (longest to shortest wavelength), includes all radio waves (e.g., commercial radio and television, microwaves, radar), infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

False, There is other things aswell

3 0
2 years ago
A circus act involves a trapeze artist and a baby elephant. They are going to balance on a teeter-totter that is 10 meters long
elena-s [515]

Answer:

Explanation:

Balance point will be achieved as soon as the weight of the baby elephant creates torque equal to torque created by weight of woman about the pivot. torque by weight of woman

weight x distance from pivot

= 500x 5

= 2500 Nm

torque by weight of baby woman , d be distance of baby elephant from pivot at the time of balance

= 2500x d

for equilibrium

2500 d = 2500

d = 1 m

So elephant will have to walk up to 1 m close to pivot or middle point.

6 0
3 years ago
A train moving west with an initial velocity of 20 m/s accelerates at 4 m/s' for 10 secon
MArishka [77]

Answer:

Distance of 400m.

Explanation:

Use your kinematics equation to solve for distance (we can use kinematics b/c acceleration is constant).

d = (initial velocity x time) + 1/2 at^2

d = (20 x 10) + 1/2 (4) (10)^2

d = 200 + 200

d = 400 m

5 0
3 years ago
A radioactive substance decays according to the formula w = 20e¡kt grams where t is the time in hours. a find k given that after
blagie [28]
W=20 e(-kt)  
A. Rearranging gives k= -(ln(w/20)/t 
 Substituting w= 10 and solving gives k=0.014 
 B. Using W=20e(-kt). After 0 hours, W=20. After 24 hours, W=14.29g. After 1 week (24x7=168h) W=1.9g 
 C. Rearranging gives t=-(ln(10/20)/k. Substituting w=1 and solving gives t=214 hours. 
 D. Differentiating gives dW/ dt = -20ke(-kt). Solving for t=100 gives dW/dt = 0.07g/h. Solving for t=1000 gives 0.0000002g/h 
 E. dW/dt = -20ke(-kt). But W=20e(-kt) so dW/dt = -kW
5 0
3 years ago
Fill in the blank for four and five answer. Question for number 6.
ehidna [41]
Increase .... decrease .... presumably it's the "best shape" for a body which has been formed by the gravitational force
7 0
3 years ago
Other questions:
  • A single proton has which electrical charge?
    11·2 answers
  • Identify the stages of the water cycle where water moves downward from the force of gravity
    8·2 answers
  • We can block light by placing obstacles in its path, but it’s much more difficult to block sound. Why?
    7·2 answers
  • if one paperclip has the mass of 1 gram and 1000 paperclips has a mass of 1 kilogram how many kilograms are 8000 paperclips ?
    9·1 answer
  • How does water affect the coastal climate?
    7·1 answer
  • When a perfume bottle is opened, some liquid changes to gas and the fragrances spreads around the room.
    8·1 answer
  • The surface of the dock is 6 feet above the water. If you pull the rope in at a rate of 2 ft/sec, how quickly is the boat approa
    13·1 answer
  • Which action has more power
    7·2 answers
  • Calculate the height of a cliff if it takes 2.35s for a rock to hit the ground when it is thrown straight up from the cliff with
    10·1 answer
  • Assume you are in the car and the car is moving at a certain speed to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!