193080N
Explanation:
Given parameters:
Mass of the box = 10kg
Acceleration = 12miles per second
Unknown:
Force on the box = ?
Solution:
The force acting on the box is function of the mass and acceleration of the box.
Force = mass x acceleration
Now we need to convert the given acceleration to m/s
1000m = 1km
1.609km = 1miles
x
x
= 19308m/s
Force on box = 10 x 19308 = 193080N
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Answer:
t= 25.04 s
Explanation:
Given that
Initial angular speed ,ωi= 26 rad/s
Angular acceleration ,α=0.43 rad/s²
We know that kinetic energy of the wheel given as
I=Mass monent of inertia
ω=Angular speed
If kinetic energy is two time then the final angular speed
We know that
t= 25.04 s
After 25.04 s then kinetic energy will become two times of the initial kinetic energy.
Answer:
The metal is Copper(Cu) and the ion is
Explanation:
The given compound is XCl.
As the compound is saild to be a salt,Oxidation state of chlorine in the salt= -1(Oxidation state of Cl in all salts = -1)
Concept:
Oxidation state of a compound is zero(Sum of Oxidation states of all its atoms).
Now let the Oxidation state of X be x,
Using the concept,
Oxidation state of X + Oxidation state of Cl = 0
x + (-1) = 0
x = +1;
Therefore Oxidation state of X = +1,
So X lost 1 electron to form the compound XCl,
So, we can say that X originally had 29 electrons.
The only element in the periodic table with 29 electrons in the ground state is Copper(Cu).