Answer:
Metals form cations, and since cations are smaller than their parent atom, the first (red) sphere will be the metal atom. Nonmetals form anions, and since anions are larger than their parent atom, the second (blue) sphere will be the nonmetal atom.
Answer:
The skier will be moving at 13.31 m/s.
Explanation:
To calculate the velocity of the skier we need to find the acceleration, as follows:
Where:
: is the force due to the rope = 365 N
: is the combined average frictional force = 190 N
m: is the mass = 75.0 kg
Now, we can calculate the velocity of the skier by using the following kinematic equation:
Where:
: is the final velocity =?
: is the initial velocity = 0 (the skier is initially at rest)
d: is the distance = 38.0 m
Therefore, the skier will be moving at 13.31 m/s.
I hope it helps you!
Answer:
15
Explanation:
The mass number is defined as the total number of protons and neutrons. The atomic number is total number of protons. And since we have the mass number and number of neutrons, we can use simple subtraction (30 - 15) to find that the atomic number is 15.
Are breathing hard. This is because cardiovascular exercise makes the heart beat faster which in turn creates a need for more air.
Answer:
91.017N
Explanation:
Parameters
L=4.67m, m=0.192kg, t = 0.794s, The pulse makes four trips down and back along the cord, we have 4 +4 =8 trips( to and fro)
so N= no of trips = 8, From Wave speed(V) = N *L/t , we have :
V= 8*4.67/0.794 = 47.0529 m/s.
We compute the cords mass per length, Let it be P
P = M/L = 0.192/4.67 = 0.04111 kg/m
From T = P * V^2 where T = Tension, we have
T = 0.04111 * (47.0529)^2
T = 91.017N.
The tension in the cord is 91.017N