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
MAVERICK [17]
2 years ago
15

Exercise 15.1 (a) Find the magnitude of the electric force between two protons separated by 1 femtometer (10^-15), approximately

the distance between two protons in the nucleus of a helium atom. (b) If the protons were not held together by the strong nuclear force, what would be their initial acceleration due to the electric force between them
Physics
1 answer:
Goryan [66]2 years ago
7 0

Answer:

(a) 230.4 N

(b) a = 1.38\times10^{29} m/s^{2}

Explanation:

Charge on a proton, q = 1.6\times10^{-19}C

Distance between the two protons, d = 1 femto meter = 1\times10^{-15}m

(a) By use of coulomb's law, the force between the two protons is given by

F =\frac{k\times q\times q}{d^{2}}

Where, k is the Coulombic constant = 9x 10^9 Nm^2/C^2

So, the force between them is given by

F =\frac{9\times10^{9}\times 1.6\times10^{-19}\times 1.6\times10^{-19}}{\left (1\times10^{-15}  \right )^{2}}

F = 230.4 N

(b) Acceleration is the ratio of force to the mass of proton.

the mass of proton, m = 1.67 x 10^-27 kg

So, acceleration

a=\frac{230.4}{1.67\times10^{-27}}

a = 1.38\times10^{29} m/s^{2}

You might be interested in
Question 1 of 10
Bad White [126]
The answer is b maybe?
3 0
3 years ago
A motorist enters a freeway at 45 km/h and accelerates uniformly to 99 km/h. From the odometer in the car, the motorist knows th
Marat540 [252]

Answer:

a)  19440 km/h²

b) 10 sec

Explanation:

v₀ = initial velocity of the car = 45 km/h

v = final velocity achieved by the car = 99 km/h

d = distance traveled by the car while accelerating = 0.2 km

a = acceleration of the car

Using the kinematics equation

v² = v₀² + 2 a d

99² = 45² + 2 a (0.2)

a = 19440 km/h²

b)

t = time required to reach the final velocity

Using the kinematics equation

v = v₀ + a t

99 = 45 + (19440) t

t = 0.00278 h

t = 0.00278 x 3600 sec

t = 10 sec

5 0
3 years ago
2. A girl whose mass is 55kg stands on a spring weighing machine inside a lift. When the lift starts to ascend, its acceleration
Annette [7]

Answer:

b

Explanation:

5 0
3 years ago
a u tube contains a liquid of an unknown density an oil of density is poured into the right arm of the tube until the oil column
scoray [572]

Answer:

The answer is "1155\ \frac{kg}{m^3}"

Explanation:

Please find the complete question in the attached file.

p = p_0 + ?gh

pi = pressure only at two liquids' devices

PA = pressure atmosphere.

1 = oil density

2 = uncertain fluid density

h_1 = 11 \ cm\\\\h_2= 3 \ cm

The pressures would be proportional to the quantity 11-3 = 8 cm from below the surface at the interface between both the oil and the liquid.

\to p_A + ?2g(h_1 - h_2) = p_A + ? 1gh_1\\\\\to ?2 = \frac{?1h_1}{(h_1 - h_2)} \\\\

       = \frac{840 \frac{kg}{m^3}}{\frac{11}{8}} \\\\= 1155\ \frac{kg}{m^3}

8 0
3 years ago
Describe 2 characteristics of the neap tide. *
Mariana [72]

Answer:

Neap tides, which also occur twice a month, happen when the sun and moon are at right angles to each other. ... This occurs twice each month. The moon appears new (dark) when it is directly between the Earth and the sun. The moon appears full when the Earth is between the moon and the sun.

5 0
2 years ago
Other questions:
  • How do p-wave and S-wave differ?
    12·1 answer
  • A vertically hung spring has a spring constant of 150. newtons per meter. A
    10·1 answer
  • If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance, aft
    14·1 answer
  • Vitamins and iron are nutrients that provide energy to the human body.<br> A true<br> B false
    5·1 answer
  • The radar system of a navy cruiser transmits at a wavelength of 1.4 cm, from a circular antenna with a diameter of 2.7 m. At a r
    8·1 answer
  • The electric field in a region of space increases from 0 to 2150 N/C in 5.00 s. What is the magnitude of the induced magnetic fi
    13·1 answer
  • Two technicians are discussing headlights. Technician A says that the electricity creates electromagnetic energy in the filament
    6·1 answer
  • Does electrons have more mass than neutrons?
    13·1 answer
  • An object undergoing simple harmonic motion takes 0.40 s to travel from one point of zero velocity to the next such point. The d
    14·1 answer
  • The 3kg object in figure is released from rest at height of on a curved frictionless ramp. at the foot of the ramp is a spring o
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!