Answer:
The dog has more momentum than the pony.
Explanation:
To solve this problem, we must remember the formula for calculating momentum, which is given below:
momentum = p = m*v
where m represents the mass of the object and v represents the velocity of the object
Using this knowledge, let's calculate the momentum for the dog and the pony.
Dog: p = m*v = (2kg)*(41 m/s) = 82 kg*m/s
Pony: p = m*v = (75kg)*(1 m/s) = 75 kg*m/s
Since 82 > 75, we can conclude that the dog has more momentum.
Hope this helps!
Answer:
Explanation:
1 )
Charge density of left plate
= - Q / A
Charge density of right plate
= + Q / A
2 )
capacitance c = ε₀ A / d
potential difference = charge / capacitance
= Q / [ ε₀ A / d ]
= Q d / ε₀ A
The correct answer is C. She did no work because she did not move the scales or sword while she posed.
Explanation:
In physics, the term "work" is used to refer to the energy or force related to the displacement of an object. Indeed, this variable is calculated through the formula W (work) = F (force) x d (displacement). This implies, there is only work if there is displacement. According to this, Brandi did no work while posing because even if she used her force to hold the scales and sword she did not move and displacement is essential for work to exist. Thus, the correct option is C.
Answer:
Explanation:
For rectangular components:
Ax = Acostheta
= 10 x cos30
= 8.66
Ay = Asintheta
= 10 x sin30
=5.
Bx = Bcostheta
= 10 x cos105
= -2.58
By = Bsin105
= 10 x sin105
= 9.65
For magnitude of R:
A = Ax + Ay
= 8.66 + 5
= 13.66
B = Bx + by
= -2.58 + 9.65
= 7.07
R = sq A*2 + B*2
= 15.38
Hey again!
Ok..
Now... The melting Point of this solid is 90°C.
Meaning That as soon as it gets to this temp... It STARTS Melting.
So at that temp... It still has some solid parts in it.
You can say its a Solid Liquid Mixture.
Additional Heat being applied at that point is not raising the temperature;rather its used in breaking the bonds in the solid. This is the Fusion stage.
After Fusion...It'd then Be a Pure Liquid with no solids in it.
So
Q'=MC∆0----- This is the heat needed to take the solid's temp from 30°c - 90°c
Q"=ml ----- This is the heat used in breaking the bonds holding the solids in the solid-liquid phase.
So
Q= Q' + Q"
Q= mc∆0 + ml
∆0 = 90°c - 30°c = 60°c
Q= 2.5(390)(60) + (2.5)(4000)
Q=6.9 x 10⁴Joules