Answer:
triple covalent bond
Explanation:
A triple covalent bond is formed when three pairs of electrons (six electrons) are shared between the two combining atoms. A triple bond is shown by marking three short lines between the two symbols of the atoms. It requires three more electrons to attain the stable octet.
- Hope this helps! If you need a further explanation please let me know.
Answer:
<em>50 m/s</em>
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Explanation:
In a projectile motion, acceleration is only on the vertical plane, that is, the vertical velocity is the only velocity component that undergoes acceleration under gravitational force. The horizontal component of velocity dos not change with time, and hence is the same as the initial velocity of the projectile.
Answer:
a) 14M
Explanation:
a)The inertia of a particle moving in a circular axis is given by,
I = Moment of inertia
M = mass of the particle
r = perpendicular distance from axis of rotation.
And by adding moment of inertia of each particle we can come to the moment of inertia of the system.
I = M
+M +M
+M
= 14M
b) Your question is incomplete but I'll write how to find the minimum force required to give a system given angular acceleration.
Minimum force is found when applied from the furthest point to the axis of rotation in the system.
, by τ = Fr, whereτ = torque , F = Force , = perpendicular distance from axis of rotation.
For minimum force r = 3d
And also τ = Iα where I = Moment of inertia and α = angular acceleration
By combining the two equations you get minimum force as,
F = Iα/r
F' = 14Mα/3d
= 14Mαd/3
The metal will no longer give the correct temperature reading if we do not drip off the water before it is placed in the calorimeter.
Explanation:
- The calorimeter is a device used to measure the flow of heat from a chemical reaction or a physical change.
- A basic calorimeter is consists of a metal container of water above the combustion chamber. The process of measuring heat is called calorimetry.
- As soon as the water begins to boil the metal should be placed so that it can obtain a constant flow of thermal energy from the boiling water instead of placing the water in cold water receiving inconsistent temperature.
- When you remove the tube with a metal form from boiling water, you hesitate before dumping the metal, the metal will no longer be the temperature of boiling water.
Answer:
(a) its moment of inertia about its center is 0.002095 kgm²
(b) Applied torque is 0.071813 Nm
Explanation:
Given;
Radius of the grinding wheel, R = 8.5cm
Mass of the grinding wheel, m = 0.580kg
Part (a) its moment of inertia about its center
I = ¹/₂MR²
I = ¹/₂(0.58)(0.085)²
I = 0.002095 kgm²
Part (b)
Given;
initial angular velocity, ωi = 1500rpm = 157.1 rad/s
final angular velocity, ωf = 1500rpm = 157.1 rad/s
Initial torque, τi = I x αi
αi = ωi / t
αi = 157.1 / 5 = 31.42 rad/s²
τi = 0.002095 x 31.42
τi = 0.06583 Nm
Final torque, τf = I x αf
αf = ωf / t
αf = 157.1 / 55 = 2.856 rad/s²
τf = 0.002095 x 2.856
τf = 0.005983 Nm
Applied torque = τi + τf
= 0.06583 Nm + 0.005983 Nm
= 0.071813 Nm
