Answer:
In
Explanation:
When an athlete bends their knees correctly they are in a better position to move quicker in any direction
Answer:
River
Explanation:
A river is a flowing, moving stream of water that feeds into a body of water.
Answer:
1.82 T
Explanation:
Here is the complete question
Particle accelerators, such as the Large Hadron Collider, use magnetic fields to steer charged particles around a ring. Consider a proton ring with 36 identical bending magnets connected by straight segments. The protons move along a 3.5-m-long circular arc as they pass through each magnet.
Part A
What magnetic field strength is needed in each magnet to steer protons around the ring with a speed of 3.5 × 107 m/s? Assume that the field is uniform inside the magnet, zero outside.
Solution
The magnetic force on the proton equals the centripetal force on it.
So, mv²/r = Bev.
So, the magnetic field strength, B = mv/re
Since we have 36 straight circular arcs of length 3.5 m, the circumference of the circle that contains it is C = 36 × 3.5 m = 126 m. Since C = 2πr, the radius of the circle is r = C/2π = 126/2π = 20 m
So, B = mv/re where m = mass of proton = 1.67 × 10⁻²⁷ kg, v = speed of proton = 3.5 × 10⁷ m/s , e = proton charge = 1.609 × 10⁻¹⁹ C and r = 20 m
B = 1.67 × 10⁻²⁷ kg (3.5 × 10⁷ m/s)/(20 m × 1.609 × 10⁻¹⁹ C) = 0.182 × 10¹ = 1.82 T
Answer:
7.8% of the original volume.
Explanation:
From the given information:
Temperature = 22° C = 273 + 22 = 295° C
Pressure = 240 kPa
Temperature = 45° C
At initial temperature and pressure:
Using the ideal gas equation:
making V_1 (initial volume) the subject:
Provided the pressure maintained its rate at 240 kPa, when the temperature reached 45° C, then:
the final volume can be computed as:
Now, the change in the volume ΔV = V₂ - V₁
∴
The required fraction of the volume of air to keep up the pressure at (240) kPa can be computed as:
= 7.8% of the original volume.
Answer:
171 ft
114 ft/s
38 ft/s²
Explanation:
The function is
At s = 3 s
The hammer falls 171 ft
Differentiating the function with respect to time we have
at t = 3 s
The velocity of the hammer is 114 ft/s
Differentiating with v respect to t
The acceleration is 38 ft/s²