Answer:
a
b
c
Explanation:
From the question we are told that
The mass of the bag is
The normal force experienced is
The maximum acceleration of the bag is
Generally this normal force experience by the bag is mathematically represented as
=>
=>
=>
=>
Generally for the bag not to slip , it means that the frictional force is equal to the sliding force
Hence is mathematically represented as
While is mathematically represented as
So
=>
=>
Generally from the workdone equation we have that
Here is the work done by friction which is mathematically represented as
Here s is the distance covered by the bag
is zero given that velocity at rest is zero
and
so
=>
substituting 2.55 m/s for v_i and 0.350 for \mu_k we have that
=>
Pls specify and I can help it really does not make scence?
Answer:
"its varying position means that the Sun lights up different regions, creating the illusion that the Moon is changing shape over time. The best way of getting to understand the lunar phases is to regularly go out on a clear night when the Moon is in the sky and observe it."
Answer: B=1.92nT
Explanation:This question uses the Biot-Savart law: the law is an equation that describes the magnetic field created by a current-carrying wire, and allows you to calculate its strength at various points.
B=(μ0/4*π)*q*v*r(unit vector)/r²
Also:
B=(μ0/4*π)*q*v*sin(θ)/r²
Where;
μ0 =permeability of free space = 4πx10-7 Hm-1
B = magnetic field in Tesla
V= velocity
r= radius
Therefore:
B=(4πx10-7/4*π)*q*v*sin(θ)/r^2
B=1x10-7*q*v*sin(θ)/r^2
Using:
q=15x10-3C
v=40m/s
tan(θ)=5/2 so θ=68.2°
r²=5²+2² (Pythagoras Theorem)
B can be calculated as:
B=1x10-7*15x10-3*40*sin(68.2)/(5²+2²)
B=1.92nT