Answer:
2744Nm
Explanation:
The gravitational field is conservative. The gravitational force only acts on a vertical direction. Hence, independently of the form of the trajectory, the work done by the gravity against the person demands the calculation of the integral of the force multiplied by the vertical displacement of the person:
![W_g=\int_0^{4}Mgdz=Mg[4]=(70kg)(9.8\frac{m}{s^2})(4m)=2744Nm](https://tex.z-dn.net/?f=W_g%3D%5Cint_0%5E%7B4%7DMgdz%3DMg%5B4%5D%3D%2870kg%29%289.8%5Cfrac%7Bm%7D%7Bs%5E2%7D%29%284m%29%3D2744Nm)
where we have taken that the displacement of the person h=z and df=dz.
hope this helps!!
Answer:
12 (Magnesium- Mg)
Explanation:
Looking at the four numbers, we have:
Magnesium, Silicon, Sulfur, and Chlorine.
We can eliminate two of the answers immediately just by looking at the periodic table.
Sulfur and Chlorine are on the nonmetal side of the periodic table. So that's <em>definitely</em> not it. That leaves Magnesium and Silicon.
Silicon is a Metalloid. Magnesium is an Alkaline earth Metal.
Metaloids are elements that have a mix of both<em> metal</em> and<em> nonmetal </em>properties (luster, how it feels, etc.). Since it's a MIX and Magnesium is just straight METAL-
We can say Magnesium has the most metallic properties.
hope this helps!!
Radio waves<span> have lower frequencies and longer wavelengths than microwaves. They are used to transmit </span>television<span> and </span>radio<span> programmes.</span>Television uses<span> higher frequencies than </span>radio. A radio<span> programme receiver does not need to be directly in view of the transmitter to receive programme </span>signals<span>.</span>
The units of temperature are different. one is Fahrenheit and the other is Celsius
Answer: Congenital diseases are those diseases that are present in the child from birth. Common examples include Cystic fibrosis, Down syndrome, and Haemophilia. Degenerative A disease in which the function or structure of the affected tissues or organs changes for the worse over time. Osteoarthritis, osteoporosis, and Alzheimer's disease are examples.
Explanation:
