Answer:
6.7 seconds
Explanation:
d=(1/2)at^2
equation
1000=(1/2)45t^2.
substitute
2000=45t^2.
multiply by 2 for both sides
44.44=t^2.
divide both sides by 45
6.7=t
take the square root of both sides
Answer:
it would be least to graetest
Explanation:
10-84
S=7400mi
t=3 min= 0.05h
v=7400mi/0.05h
v=148000mph
Answer:
Potential difference = 245 V
Explanation:
First, we have to find velocity at which ionized molecules are accelerated into a magnetic field. Here, magnetic force acts as a centripetal force due to circular path of molecules towards detector slot.
- B= 0.25 T,d= 12 cm
- mass = (12+16+16)×1.67×10-27kg
Now, the magnetic force to the centripetal force equates as:
qvB = =
For Velocity (v) :
v =
According to law of conservation of energy, we know that the initial potential energy of the molecules is converted into kinetic energy as they enter into the magnetic field. So,
Substitute the value of v in above equation:
qV = m
V =
V= 245 V
Answer:
f= 0.48 s⁻¹
Explanation:
Given that
Mass of the ladder ,m= 6 kg
L= 2 m
Mass of artist ,M= 42 kg
The total moment of inertia of the both ladder and artist ,I
Here
I=50 kg.m²
The angular frequency f given as
Here
D=1 m
f= 0.48 s⁻¹