Answer:
The direction of the force on the vertical wire is towards the East or right.
Explanation:
Using Fleming's right hand rule, the current is the middle finger pointing straight up, the magnetic field is the fore-finger pointing Northwards and then the thumb is the direction of the force on the vertical wire.
Following these conventions, the thumb points towards the East. So, the direction of the force on the vertical wire is towards the East or right.
Answer:
Answer is 257°C
Explanation:
Given
frequency = 628 Hz
wavelength = 0.49 m
speed of sound at 0°C = 325 m/s
Find
1.speed of sound at t °C=?
2.temperature = ?
Formula
speed of sound at t °C = speed of sound at 0°C [1+t/273]
Solution
1. speed of sound at t °C = f*∧
= 628*0.49
=307.7m/s
2.speed of sound at t °C = speed of sound at 0°C [1+t/273]
307.7 m/s = 325 m/s [1+ t/ 273]
307.7/325 = 1+t/273
0.94 = 1+t/273
multiplying 273 on both sides
(0.94)(273) = 1+t/273 (273)
258 = 1+ t
258 - 1 = t
257°C = t
(a) -4667 N
First of all, we can calculate the acceleration of the arm and the glove, using the following equation:
where
v = 0 is the final speed
u = 10 m/s is the initial speed
a is the acceleration
d = 7.50 cm = 0.075 m is the distance through which the arm and the glove move before coming to a stop
Solving for a,
And since the know the mass of the arm+glove:
m = 7.00 kg
We can now calculate the force exerted:
(b) -17500 N
We can repeat the problem, but this time the stopping distance is different:
d = 2.00 cm = 0.02 m
So the acceleration is
and so the force is
(c) Yes
The force exerted when the glove is used is
F = 4667 N
We see that this force corresponds approximately to the weight of an object of mass m=476 kg, in fact:
Which is quite a lot. Therefore, the force even when gloves are used seems enough to cause damage.
Answer:
True
Explanation:
Because that's what the law of inertia does
I would answer but you have no choices lol