Answer:
<em>Velocity is the rate at which the position changes</em>
<em>Velocity is the rate at which the position changesWhy do we need</em>
<em>Velocity is the rate at which the position changesWhy do we needVectors make it convenient to handle quantities going in different directions</em><em>.</em><em>.</em><em> </em>
Explanation:
Thank you!
Free fall without air resistance:
g=9.81 m/s²
t=235 s
h=?
h=0.5*g*t²
h=0.5*9.81*235²
h=270879m =270 km
Answer:
the radius of the protons path is r = 0.85 m.
Explanation:
the force due to magnetic fields lead to the cetripetal force, such that:
F = q×v×B = m×(v^2)/r
q×B = m×v/r
then:
r = m×v/q×B
r = p/q×B
then, the kinetic energy of the proton:
K = 1/2×m×v^2 = p^2/(2×m)
q×B = \sqrt{2×m×K}/r
r = \sqrt{2×m×K}/(q×B)
= \sqrt{2×(1.67×10^-27)×(5.3×1.60×10^-13)}/(1.60×10^-19×0.39)
= 0.85 m
Complete Question:
What force (in N) must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2100 kg car (a large car) resting on the slave cylinder
? The master cylinder has a 2.00-cm diameter and the slave has a 24.0-cm diameter
Answer:
Explanation:
Given
--- mass
--- diameter of the large cylinder
--- diameter of the slave cylinder
To do this, we apply Archimedes' principle of buoyancy which implies that:
Where
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Calculating the area of the master cylinder.
Calculating the area of the slave cylinder.
Substitute these values in:
Multiply both sides by
The force exerted on the slave cylinder (F2) is calculated as:
Substitute 20580 for F2 in
<em>Hence, the force exerted on the master cylinder is approximately 142.92N</em>
Answer:
25N
Explanation:
Find acceleration first
A=v-u/t
acceleration = 5/0.1s =50m/s^2
then find net force using f=mass x acceleration, which iin this case is 25N