I’m so sorry I been trying to figure this out for sun
Answer:
66.8°C
Explanation:
dQ = m*cp*dT where:
m = mass of block
cp = specific heat of iron
dT = temperature change
-------
dQ = 3.5 10^4 J
cp = 0.45 Kj / Kg = 450 J / Kg
3.5 10^4 = 2.3 * 450 * dt-----dt = 35000 / 450 * 2.3 = 33.8 °
-------
Final temperature = 33 + 33.8 = 66.8 °C
Answer:
It’s 1
Explanation:
Potential difference =Work Done (in Joules)/ Total Charge(in Coulomb)
So Here
Potential difference =2J/2C
=1V
thankyou : )
Answer:
Force = mass times acceleration
Acceleration is change in velocity over time.
The elevator is moving at constant velocity. That means there is no net force on the elevator. Gravity is still acting on the elevator but the tension of cables, friction and other mechanism are cancelling out the acceleration due to gravity. The same as an elevator being held at a floor.
The normal force is the force exerted by surfaces the to stop you from passing through. It is perpendicular to the surface the object is on, in this case the 38.5kg person. It being an elevator I am assuming the floor is perpendicular to the force of gravity. Normal force is equal to the force being exerted on it, in this scenario the persons mass x acceleration due to gravity.
So your answer is 38.5kg x 9.81m/s^2 = 377.685N
Explanation:
Answer:
a
b
Horizontal component
vertical component
c
d
Explanation:
Generally from the question we can deduce that he initial velocity of the cork, as seen by an observer on the ground in terms of the x unit vector is
due to the fact that the cork is moving horizontally
Generally from the question we can deduce that the vertical and horizontal components of the initial velocity is
due to the fact that the balloon is moving downward which is the negative which will also cause the cork to move vertically with the balloon speed
Generally the initial velocity (magnitude and direction) of the cork, as seen by an observer on the ground is mathematically represented as
Generally the initial direction of motion as seen by the same observer is mathematically represented as
![\theta = tan^{-1}[\frac{2}{5} ]](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20%20tan%5E%7B-1%7D%5B%5Cfrac%7B2%7D%7B5%7D%20%5D)
Generally the time taken by the cork in the air before landing is mathematically represented as
So D = 6 \ m from the question
g = 9.8 \ m/s^2
u = 
= 2 m/s this because we are considering the vertical motion
So
Solving using quadratic formula w have that
Generally the distance of the cork from the balloon is mathematically represented as
