Answer:
a = 5.5 [m/s²]
Explanation:
To solve this problem we must use Newton's second law, which tells us that the force is equal to the product of mass by acceleration.
ΣF =m*a
where:
F = Force [N] (units of Newtons)
m = mass = 20 [kg]
a = acceleration [m/s²]
Let's take the force of 230 [N] as positive, in this way the other force will be negative, by pointing in the opposite direction.
![230 - 120 = 20*a\\110 = 20*a\\a=5.5 [m/s^{2} ]](https://tex.z-dn.net/?f=230%20-%20120%20%3D%2020%2Aa%5C%5C110%20%3D%2020%2Aa%5C%5Ca%3D5.5%20%5Bm%2Fs%5E%7B2%7D%20%5D)
<span> (ρ = m / V) hope this helps...:)</span>
Answer:
C
Explanation:
Velocity is just speed with direction
Answer:
Continental drift describes one of the earliest ways geologists thought continents moved over time. Today, the theory of continental drift has been replaced by the science of plate tectonics.
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other. He called this movement continental drift.
Answer:
3°C
Explanation:
We can that heat Q=m
dT
Where m is the mass = specific heat capacity
dT = Temperature difference
here we have given m=625 g =.625 kg
specific heat of granite =0.79 J/(g-K) = 0.79 KJ/(kg-k)
=25°C
we have to find
we have also given Q=10.9 KJ
10.9=0.625×0.79×(25-)
25- =22
=3°C
