Answer:
In combination with hydrogen or with hydrogen and oxygen, they all form acids.
Explanation:
Non metal possesses
High ionization energies.
High electronegativities.
Poor thermal conductors.
Poor electrical conductors.
In combination with hydrogen or with hydrogen and oxygen, they all form acids. Example
H2o + Cl2 = Hcl + O2
Answer:
a) 45 s , b) vₐ = 90 m / s, v_b = 162 m / s, c) x_b = 3.328 10⁴ m
Explanation:
We can solve this exercise using the kinematic relations
Vehicle A
xₐ = v₀ₐ t + ½ aₐ t²
vehicle B
starts two seconds later
x_b = v_{ob} (t-2) + ½ a_b (t-2) ²
as cars start from rest their initial velocities are zero
at the point where they meet, the position must be the same for both vehicles
xa = 0 + ½ aₐ t²
xb = 0 + ½ a_b (t-2) ²
½ aₐ t² = ½ a_b (t-2) ²
t = (t-2)
t (1 - \sqrt{ \frac{a_a}{a_b} }) = 2
t (1 - ⅔, ) = 2
t = 2 / 0.4444
t = 45 s
b)
the speed of each car
vₐ = voa + aa t
vₐ = 0 + 2 45
vₐ = 90 m / s
v_b = 3.6 45
v_b = 162 m / s
c) xb = 0 + ½ ab (t-2) ²
x_b = ½ 3.6 (45-2) ²
x_b = 3.328 10⁴ m
It looks like it's wanting you to find speed and velocity
these formula's should help
speed=distance/time
velocity=overall distance/time
Answer:
8.1 N-m
Explanation:
We are given that
Mass=m=4.9 kg
Length=L=3.1 m
We have to find the magnitude of torque (due to the force of gravity).
We know that
Using the formula
Hence, the magnitude of torque =8.1 N-m
Momentum equation is
change in momentum = mass•initial velocity•final velocity
so....
p=700(15) because your initial is 30, and your final in 15, so you subtract! hope that helped!