Answer:
Explanation:
We are given that
Mass of uranium,
Initial velocity,u=0
Mass of helium nucleus,
Mass of thorium,
Speed of helium nucleus,
We have to find the speed of the thorium nucleus.
According to law of conservation of momentum
Initial momentum=Final momentum
Answer:
45 s
Explanation:
To find the time it takes to stop, we first find the deceleration, a of the car from
v² = u² + 2as and a = (v² - u²)/2s were v = final velocity of car = 0 mph = 0 m/s, u = initial velocity of car = 30 mph = 30 × 1609.34 ft ÷ 3600 s = 13.41 ft/s and s = distance = 300 ft. Substituting the values into a, we ave
a = (v² - u²)/2s = (0² - 13.41²)/2×300 = -0.3 ft/s²
We then find the time for this deceleration from v = u + at ⇒ t = (v - u)/a
t = (v - u)/a = (0 - 13.41 ft/s)/-0.3 ft/s² = - 13.41 ft/s/-0.3 ft/s² = 44.7 s ≅ 45 s
So it takes 45 seconds to stop.
Answer:
Explanation:
<u><em>Given:</em></u>
Mass = m = 100 kg
Acceleration due to gravity = g = 1.62 m/s²
<u><em>Required:</em></u>
Weight = W = ?
<u><em>Formula:</em></u>
W = mg
<u><em>Solution:</em></u>
W = (100)(1.62)
W = 162 N
Answer:
Explanation:
For discharge of capacitor in RC circuit , the relation is as follows
V is voltage across the capacitor , V₀ is maximum voltage across capacitor , λ is time constant and t is the time after which the voltage is recorded. During discharge this will also be voltage across resistance .
Taking log on both sides
lnV = lnV₀ -
Given equation
[lnV] = - .027 t + 2.5
Comparing these equation
λ = 37 s
time constant = 37 sec.
There is an identity of sin(2pi-x) = -sin(x) and cos(2pi-x) = cos(x). This is what we are going to use.
<span>(7pi/6) = (2pi)-(pi/6)
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Therefore:
<span>
1) sec(7pi/6) = 1/cos(2pi-(pi/6)) = 1/cos(pi/6) = 2sqrt(3)/3
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<span>2) cos(7pi/6) = cos(pi/6) = sqrt(3)/2
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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