The bending of wave crests as the reach shallow water is:

A horizontal wire 1 m long carries 0.4 A and is oriented 30° N of W. The Earth's magnetic field runs due north at this location

alexira [117]

Answer:

Explanation:

Force on a current carrying conductor in a magnetic field is given by the following expression

F = B i L where B is magnetic field perpendicular to wire or current , i is current and L is length of the wire.

Magnetic field of 1.5 x 10⁻⁵ T is making an angle of 60 degree with the wire so the component of field perpendicular to it

B = 1.5 X 10⁻⁵ Cos 30° = 1.3 x 10⁻⁵ T.

Force = BiL

= 1.3 X 10⁻⁵ X .4 X 1

= 5.2 X 10⁻⁶ N.

The direction of force can be found out from Fleming's left hand rule . It will be along downward direction.

5 0

4 years ago

How to calculate? I got 15000N for (a)

MAXImum [283]

Your answer for part a is correct. Using Newton's 3rd Law, the force on the rocket by the exhaust leaving the rocket is the same magnitude (opposite direction) as the downward force applied to the exhaust.
In part b the net force is the upward force from the exhaust thrust minus the downward force of gravity:

$F_{net}=F_{thrust}-mg=15,000N-1500kg \times 1.6 \frac{m}{s^2}=12,600N$

Then using the Second Law, we get for part c:

$F=ma \\ a= \frac{F}{m} = \frac{12600N}{1500kg} =8.4 \frac{m}{s^2}$

The force and acceleration are in the upward direction

3 0

3 years ago

An electron of mass 9.11×10−31 kg leaves one end of a TV picture tube with zero initial speed and travels in a straight line to

dedylja [7]

Answer:

$F=1.509\times 10^{-16}N$