Answer:
A. the box accelerated to at 1.0 m/s² to the right because the net force is 17N to the right.
Explanation:
To solve this problem, we need to find the net force acting on the body;
Net force = Forward force - Backward force
Forward force = 35N
Backward force = 18N
Net force = 35N - 18N = 17N
So;
Net force = mass x acceleration
17 = 17 x acceleration
Acceleration = 1m/s²
Therefore, the body moves in the forward direction with an acceleration of 1m/s²
The half-life of Th-232 is 1.405 × 10¹⁰ years
Time elapsed = 2.8 x 10⁹ years
Equation of radioactive decay:
A = A₀ = (1/2)^ t/t₁/₂
Thus, the percentage of thorium-232 in the rock that was dated at 2.8 billions year = 87.1%
Answer:
a. Heterogeneous
b. Homogeneous
c. Homogeneous
d. Heterogeneous
e. Heterogeneous
Explanation:
A heterogeneous mixture is a mixture in which you can see multiple different ingredients in, for example vegetable soup, tea with ice and lemon slices, or fruit salad.
A homogeneous mixture is a mixture in which you can only see one thing, for example tea, seawater, or milk.
