Answer:
<u>55 kg</u>
Explanation:
Formula :
<u>Force = mass × acceleration</u>
<u />
=========================================================
Given :
⇒ Force = 220 N
⇒ acceleration = 4 m/s²
===========================================================
Solving :
⇒ 220 N = mass × 4 m/s²
⇒ mass = 220/4
⇒ mass = <u>55 kg</u>
Explanation:
<em>Work done by torque = magnitude of force * perpendicular distance between the point of action and point(axis) of rotation.</em>
X-component of a projectile in flight =
(initial x-component)
plus
(initial horizontal component of velocity) x (flight time so far)
Answer:
E =9525.6 J
Explanation:
Given that
Current ,I = 4.9 A
time ,t = 5.4 min
Voltage difference ,ΔV = 6 V
energy delivered by battery in time t is given as
E=V I t
where V is voltage, I is the current and t is the time.
now putting the values in above equation
E= 6 x 4.9 x 5.4 x 60 J ( 1 min = 60 s , 5.4 min = 5.4 x 60 s)
E =9525.6 J
Therefore the energy reduced will be 9525.6 J
Answer:
The correct answer will be "2 m".
Explanation:
As we know,
⇒ ![\frac{Mirror's \ size}{Body's \ height} =\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7BMirror%27s%20%5C%20size%7D%7BBody%27s%20%5C%20height%7D%20%3D%5Cfrac%7B1%7D%7B2%7D)
Now,
⇒ ![Size \ of \ a \ mirror = \frac{n}{2}](https://tex.z-dn.net/?f=Size%20%5C%20of%20%5C%20a%20%5C%20mirror%20%3D%20%5Cfrac%7Bn%7D%7B2%7D)
Then,
⇒ ![Size \ of \ mirror = \frac{4}{2}](https://tex.z-dn.net/?f=Size%20%5C%20of%20%5C%20mirror%20%3D%20%5Cfrac%7B4%7D%7B2%7D)
⇒ ![=2 \ meter](https://tex.z-dn.net/?f=%3D2%20%5C%20%20meter)