Answer:
There are over 10 hazards or more at construction sites ,below are examples
Explanation:
1.Working at height.
2.Moving objects.
3.Slips, trips, and falls.
4.Noise.
5.Hand arm vibration syndrome.
6.Material and manual handling.
7.Collapsing trenches.
8.Asbestos.
9.Electricity.
10.Airborne fibres and materials.
Answer:
The current of the toaster is 3.93A
Explanation:
Using the GRASS method:
G: Given: The information that is given is that we have 28Ω of Resistance and 110V of voltage.
R: Required: We need to find the current measured.
A: Action: We can use Ohm's law that relates resistance, voltage and current in the equation:
V = R*I
Or:
I = V/R
<em>Where I is current in A, V is voltage = 110V and R is resistance = 28Ω</em>
S: Solve:
I = 110V / 28Ω
I = 3.93A
S: Statement:
<h3>The current of the toaster is 3.93A</h3>
Answer:
Protons = 89
Neutrons = 142
Electrons = 89
Option C
Explanation:
Hello,
Were required to find the proton, neutron and electron of an element Y
The atomic mass of element Y is composed of the protons and neutrons while the atomic number is the exact amount of protons present in the element.
Element = ₈₉²³¹Y
Atomic number = 89
Number of protons = 89
Number of electrons = 89
Atomic mass = 231
Atomic mass = protons + neutrons
231 = 89 + neutrons
Neutrons = 231 - 89
Neutrons = 142
Therefore the number of protons is 89, number of neutrons is 142 and number of electrons is 89.
Note: for an electrically neutral atom, the number of protons must be equal to the number of electrons
Answer:
Boron phosphide (BP) is a chemical compound of boron and phosphorus. It is a semiconductor. Contents. 1 History; 2 Appearance; 3 Chemical properties .
Explanation:
