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
Anastaziya [24]
3 years ago
6

Help, please

Physics
1 answer:
Mice21 [21]3 years ago
8 0

Answer:

A and A

Explanation:

see paper for work! :)

You might be interested in
Determine the energy required to accelerate an electron between each of the following speeds. (a) 0.500c to 0.900c MeV (b) 0.900
Aleonysh [2.5K]

Answer:

The energy required to accelerate an electron is 0.582 Mev and 0.350 Mev.

Explanation:

We know that,

Mass of electron m_{e}=9.11\times10^{-31}\ kg

Rest mass energy for electron = 0.511 Mev

(a). The energy required to accelerate an electron from 0.500c to 0.900c Mev

Using formula of rest,

E=\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{f}^2}{c^2}}}-\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{i}^2}{c^2}}}

E=\dfrac{0.511}{\sqrt{1-\dfrac{(0.900c)^2}{c^2}}}-\dfrac{0.511}{\sqrt{1-\dfrac{(0.500c)^2}{c^2}}}

E=0.582\ Mev

(b). The energy required to accelerate an electron from 0.900c to 0.942c Mev

Using formula of rest,

E=\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{f}^2}{c^2}}}-\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{i}^2}{c^2}}}

E=\dfrac{0.511}{\sqrt{1-\dfrac{(0.942c)^2}{c^2}}}-\dfrac{0.511}{\sqrt{1-\dfrac{(0.900c)^2}{c^2}}}

E=0.350\ Mev

Hence, The energy required to accelerate an electron is 0.582 Mev and 0.350 Mev.

4 0
4 years ago
What is total resistor formula
sp2606 [1]

Answer:

If you know the current and voltage across the whole circuit, you can find total resistance using Ohm's Law: R = V / I.

Explanation:

8 0
3 years ago
Un carro tiene una velocidad angular de 95 rev/min. a) ¿Cuál es la velocidad tangencial del objeto si se colocan unos contrapeso
Maru [420]

Answer:

v = 5.949 m / s ,      a = 59.18 m / s²

Explanation:

Linear and angular quantities are related

           v = w r

we search the magnitudes to the SI system

           w = 95 rev / min (2π rad / 1rev) (1 min / 60 s) = 9.948 rad / s

           d = 598 mm = 0.598 m

a) let's calculate the linear velocity

           v = 9.948 0.598

           v = 5.949 m / s

b) Cenripetal acceleration

            a = v² / r

            a = 5.94 2 / 0.598

            a = 59.18 m / s²

6 0
4 years ago
A uniform metal bar 100cm long balances at 20cm mark when a mass of 1.5kg is attached at 0cm mark calculate the weight of the ba
beks73 [17]

Answer:

30 N

Explanation:

there are two forces act on the bar:

- weight of 1.5 kg mass, w = mg = 15 N

- weight of the bar, wb

for balance,

w * Lw = wb * Lwb

Lw = length of bar from the mass to the pivot

Lwb = lenght of bar from the center of the bar to the pivot

15 * 20 = wb * (50-20)

300 = wb * 30

wb = 300/30 = 30 N

4 0
4 years ago
Marx argued that what happens when a worker is separated
kicyunya [14]

Answer:

well its simple the worker wouldn't actually be working

3 0
3 years ago
Other questions:
  • Upper section of the lithosphere
    5·2 answers
  • The rate at which an object moves
    13·2 answers
  • The children were tired because they(swim) pool all afternoon​
    15·2 answers
  • Derek runs 4 laps around the track. If each lap around the track is 0.25 miles long, and he starts and stops in the same locatio
    5·2 answers
  • Which gas is most important for understanding atmospheric processes?
    5·2 answers
  • An ant on a picnic table travels 300 cm eastward, then 34 cm northward, and finally 18cm westward. What is the magnitude of the
    6·1 answer
  • You are driving on the highway, and you come to a steep downhill section. As you roll down the hill, you take your foot off the
    12·1 answer
  • What do both Dr. Weishampel and Dr. Berger-Wolf use to explore interactions in ecosystems?
    9·1 answer
  • Please answer this question sqdancefan​
    5·2 answers
  • Please Help!!! I have no idea :(
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!