Answer:
29.6 kg
Explanation:
Centripetal force = mass × centripetal acceleration
F = m v² / r
88.0 N = m (2.50 m/s)² / 2.10 m
m = 29.6 kg
Answer:
A
Explanation:
<em>a_c</em><em> </em><em>=</em><em> </em><em>v</em><em>^</em><em>2</em><em>/</em><em>r</em>
<em>v</em><em> </em><em>=</em><em> </em><em>sqrt</em><em>*</em><em>a_c</em><em> </em><em>×</em><em> </em><em>r</em><em>*</em>
<em>v</em><em> </em><em>=</em><em> </em><em>sqrt</em><em> </em><em>*</em><em> </em><em>1</em><em>8</em><em> </em><em>×</em><em> </em><em>9</em><em>*</em><em> </em>
<em>v</em><em> </em><em>=</em><em> </em><em>9</em><em>×</em><em>sqrt</em><em> </em><em>*</em><em>2</em><em>*</em>
<em>v</em><em> </em><em>=</em><em> </em><em>1</em><em>2</em><em>.</em><em> </em><em>7</em><em> </em><em>m</em><em>/</em><em>s</em>
Answer:It started at 20°C, the bras and the iron must b cooled at -150°C.
Explanation:
The formular for linear expansion is given by:
L = Lo + Lo&◇T
Where L = linear dimensions)diameter) after temperature change.
Lo=Original linear dimension
&= Coefficient of thermal expansion for the material.
◇T=Change in temperature.
At some temperature,L(brass)=L(iron)
Lo + Lo&◇T = Lo + Lo&◇T
8.753cm + 8.753cm×(8.7×10^-6C^-1)×◇T=8.753cm+ 8.753cm ×(12.0×10^-6C^-1)×◇T
8.753+(1.636×10^-4)◇T= 8.753+(1.049×10^-4C^-1)◇T
5.87 × 10^-5◇T= 0.010
◇T= 0.010/(5.87×10^-5)
◇T= 170°C
◇T=T1-T2
T= (20 - 170)°C
T= -150°C
<u>Complete Question:</u>
Which words or phrases describe the outer planets? Check all that apply.
1. rocky
2. gaseous
3. few moons
4. low density
5. slow rotation
<u>Answer:</u>
The outer planets of our Solar System are primarily composed of gases, dust, being bigger in size but have lower density as compared to the inner planets.
<u>Explanation:</u>
According to the observation and data received by the the astronomical entities worldwide, it's concluded that the outer planets of our Solar System; Jupitor, Satern, Uranus and Neptune.
These planets are also termed as Jovian planets or Gas Giants as they are primarily made of gases and dust. However, their inner core is made of solid heavy metals. Jupitor is the largest among all of them, having 63 so far identified moons. Its atmosphere is stormy.
Talking about the density, since these planets are made of dust particles and gases, they are of lower density. Uranus has the smallest mass inspite of being the bigger planets of the Solar System. This is because these planets have nothing or nearly nothing solid.
Answer:
Newton's second law of motion states that the acceleration ( a) experienced by an object is directly proportional to the net force ( Fnet) experienced by the object and inversely proportional to the mass of the object. In equation form, it could be said that a = Fnet/m. The net force is the vector sum of all the individual force values.
Explanation: