Answer:
43.1 g
Explanation:
Density, d is defined as the mass per unit volume of an object. Density is therefore expressed as
d=m/v
Here, m is mass and v is the volume
Making mass the subject of the formula
Mass, m=dv
The volume, v is given by
V=lwh
Substituting lwh for v in the equation for mass then mass, m=dlwh
Substituting 2.6 g/cm3 for d, 4.0 cm for l, 1.8 m for w and 2.3 for h then the mass of the block will be
M=2.6*4*1.8*2.3=43.056 g
Expressing it in 1 decimal place, mass is approximately 43.1 g
Answer:
<h2>3,2 oky na dekh Lena ek bar</h2><h2>2,5</h2>
motion
vt=vo+at
10 m/s = 2 m/s + 2.2 m/s².t
8 = 2.2t
You would have done 240 joules of work on the box.
Work = (force) x (distance)
= (60 newtons) x (4 meters)
= 240 joules .
Cases A and B are all correct.
In Case C, the GPE is incorrect.
(But then, the power and HP have been correctly calculated
from the incorrect value of GPE, so we can't gig you too bad.)
