Physics, 14.07.2019 23:00 adamsc819

50 pj of energy is stored in a 2.0 cm * 2.0 cm * 2.0 cm region of uniform electric field. what is the electric field strength?

Answers: 1

Show answers

Answers

Answer from: mimiloveyuhh

The electric field strength is 1188.46 N/C.

Electric field strength

Electric field strength is the force per unit charge in a given region of space.

Relationship between electric field strength and energy stored is given as;

$U = \frac{1}{2}\varepsilon E^2 V$

where;

E is the electric field strengthV is the volume

The electric field strength is calculated as follows;

$E =\sqrt{ \frac{2U}{\varepsilon V} }\\\\E = \sqrt{ \frac{2\times 50 \times 10^{-12} }{8.85 \times 10^{-12} \times (0.02)^3 } }\\\\E= 1188.46 \ N/C$

Learn more about electric field strength here: link

Answer from: sofielofi

Energy stored in electric field region is given by

$U = \frac{1}{2} \epsilon_0 E^2 Volume$

here we know that

U = 50 pJ

$\epsilon_0 = 8.85*10^{-12}$

$Volume = 0.02 * 0.02 * 0.02 = 8 * 10^{-6}$

Now we can use above formula to find the electric field strength

$50 * 10^{-12} = \frac{1}{2} * 8.85 * 10^{-12} * E^2 * 8 * 10^{-6}$

by solving this equation we will have

E = 1.19 * 10^3 N/C

Answer from: Quest

Sorry i don’t know what to do

Answer from: Quest

m₁v₁ + m₂v₂ = (m₁ + m₂)vmomentum is conserved.the left-hand side of the equation represents the momentum in the system before the collision.the right-hand side represents the momentum in the system after the collisionm₁ and v₁ represents the mass and the velocity of the physics blockm₂ and v₂ represents the mass and velocity of the ball of puttyv represents the final velocity of the combined mass.the question states the two masses stick together. they combined mass has its own velocity with the body mass the sum of the two objects' massestheir combined momentum is (m₁ + m₂)vto find the magitude of (m₁ + m₂)v, we need to add the vectors on the left-hand side of the equation: m₁v₁ + m₂v₂.note the diagram. i have positioned the vectors in accordance with their directions.the magnitude of the resultant can be calculated using the pythagorean theorem since this is a right triangle situation (north and west are perpendicular)|(m₁ + m₂)v| = √[ (m₁v₁)² + (m₂v₂)² ]|(m₁ + m₂)v| = √[ (1.5kg·8.0m/s)² + (0.40kg·20m/s)² ]|(m₁ + m₂)v| = 14.4 kg m/sfor two significant figures (assuming that 20m/s is two), this rounds to 14 kg m/s

Another question on Physics

Physics, 21.06.2019 18:10

Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.

Answers: 1

Answer

Physics, 22.06.2019 08:00

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

Answers: 2

Answer

Physics, 22.06.2019 16:50

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Answers: 2

Answer

Physics, 22.06.2019 18:40

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Answers: 2

Answer

You know the right answer?

50 pj of energy is stored in a 2.0 cm * 2.0 cm * 2.0 cm region of uniform electric field. what is th...

Questions