Couldn’t really read or see the problem clearly, but from what I think I saw I would say B
Answer:
The buoyant force is 9.8 N.
Explanation:
The buoyant force acting on the material is called upthrust, and can be determined as;
Upthrust = density of liquid x volume of object x gravitational force
So,
density =
⇒ mass = density x volume
= 4230 x 0.001
= 4.23
mass of the material = 4.23 kg
But,
weight = mass x gravitational force
weight = 41.5 N, and mass = 4.23 kg, then;
41.5 = 4.23 x g
g =
= 9.811
g = 9.8 m/
Upthrust = 1000 x 0.001 x 9.81
= 9.81 N
The buoyant force is 9.8 N.
Answer:
<h3>40.0 Joules. None of the answers is correct</h3>
Explanation:
Kinetic energy of an object is expressed as;
KE = 1/2mv² where;
m is the mass of the object
V is the velocity of the object.
Let Ma be the mass of the basketball and Mb be the mass of baseball.
If the mass of the basketball shown below is 4 times the mass of the baseball, then Ma = 4Mb
KE of the basket ball = 1/2MaVa²
Va² = 2(KE)a/Ma ...... 1
KE of the baseball = 1/2MbVb²
Vb² = 2(KE)b/Mb .......... 2
Since their velocities are the same, hence Va²= Vb²
2(KE)a/Ma = 2(KE)b/Mb
Substituting Ma = 4Mb into the resulting expression.
2(KE)a/4Mb = 2(KE)b/Mb
2(KE)a/4 = 2(KE)b
Given Kinetic energy of baseball (KE)b = 10.0J, the expression becomes;
2(KE)a/4 = 2(10)
2(KE)a = 4*20
2(KE)a = 80
(KE)a = 80/2
(KE)a = 40.0J
Hence the kinetic energy of the basketball is 40.0Joules
yes
Explanation:
because hindi ko tlaga ala
Answer:
N = 25795 loops
Explanation:
The magnetic field of a solenoid can be calculated by using the following formula:
where,
N = No. of loops = ?
B = Magnetic Field = 0.78 T
L = Length of solenoid = 32 cm = 0.32 m
I = Current = 7.7 A
μ = permeability of free space = 4π x 10⁻⁷ N/A²
Therefore,
<u>N = 25795 loops</u>