Answer:
ac = 3.92 m/s²
Explanation:
In this case the frictional force must balance the centripetal force for the car not to skid. Therefore,
Frictional Force = Centripetal Force
where,
Frictional Force = μ(Normal Force) = μ(weight) = μmg
Centripetal Force = (m)(ac)
Therefore,
μmg = (m)(ac)
ac = μg
where,
ac = magnitude of centripetal acceleration of car = ?
μ = coefficient of friction of tires (kinetic) = 0.4
g = 9.8 m/s²
Therefore,
ac = (0.4)(9.8 m/s²)
<u>ac = 3.92 m/s²</u>
Answer:
1.) 6 hectokisses 50 times
2.) Millionaire
Explanation:
Centripetal Force, F = mv²/r
Where m = mass in kg, v = velocity in m/s and r = radius of curvature in m.
Centripetal Force, F = 2000 * 25² / 80. Use your calculator.
F = 15 625 N.
Neap tides occur at or immediately after the First Quarter
and Third Quarter moon phases. At those times, the moon
is 'to the side' of the Earth. I mean, the sun, Earth, and Moon
make a right angle, with Earth at the vertex.
Answer:
The potential difference through which an electron accelerates to produce x rays is
.
Explanation:
It is given that,
Wavelength of the x -rays, 
The energy of the x- rays is given by :

The energy of an electron in terms of potential difference is given by :

So,

V is the potential difference
e is the charge on electron


V = 12431.25 volts
or

So, the potential difference through which an electron accelerates to produce x rays is
. hence, this is the required solution.