I do believe all of these but core elements can be determined by spectroscopy which includes the use of electromagnetic radiation. Both the surface and core temperature can be measured using light. Surface elements can be found because the absorption lines of different elements in the spectra of the star, but I haven't heard anything about using spectral analysis for core elements.
Answer:
779.87 N/m²
Explanation:
Pressure = Force (F) / Area (A)
Recall :
Force = ma ; mass * acceleration due to gravity
a = 9.8 m/s² ; mass = 0.4kg
Force, F = 0.4 * 9.8 = 3.92 N
Area = πr² ; r = Radius = 4cm = 4 / 100 = 0.04 m
Area = π0.04² = 0.0050265 m²
Hence,
Pressure = 3.92 / 0.0050265
Pressure = 779.86670 N/m²
Pressure = 779.87 N/m²
<span>Answer:
The spring force at A and B can be obtained
directly by summing moments_aJx)ut points B and A. respectively.
(+ IM, = 0; F A (1)- 392.4(3) =0 F A = 1 177.2 N
C+ 1M a = 0; F, (1) -392.4(4) = 0 F, = 1569.6 N
Spring Formula : Applying A = - , we have
Inn I S ,
A a = - 1 . 177 ' -- = 0.07*48 m A, = 156 ~ = 0. 10464 ra
x 15(103) 15(103)
Geometry : The angle of tilt a is
a - tan' 1 ^
0.10464 + 0.07848
1
10.4°
v * F
Z te</span>
Answer:
With sonar, what happens to sound pulses from a ship after they hit the ocean floor? ... They bounce back to the ship.
Explanation:
Answer:
23 mi
Explanation:
Let us first record all the values we have
acceleration = 4 ft/s
max speed = 90 mi/hr * 1 hr/3600s * 5280 ft/1 mi = 132 ft/s
We can use the equation of linear motion since acceleration is constant
distance covered = distance during acceleration + distance during costant
velocity
distance in miles = 120 978 ft * 1 mi/5280 ft = 22.9125 mi ≈ 23 mi
