## the conservation of linear momentum, Physics

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Good day. I enjoy watching your physics videos, but I have a question and was wondering if you can answer it for me showing the working. the question is as follows:
A flat truck of mass 400kg is moving freely along a horizontal track at 3.0ms-1. A man moving at right angles to the track jumps on to the truck causing its speed to decrease by 0.5ms-1. What is the mass of the man?

#### Deflection magneto meter, while taking readings in a deflection magnetomete...

while taking readings in a deflection magnetometer the deflection should be between 30 degree and 60 degree.why?

#### Michelson interferometer, michelson interferometer

michelson interferometer

#### Define velocity, VELOCITY: The time rate of change of displacement of a...

VELOCITY: The time rate of change of displacement of a body is known as velocity. It is represented by V ?.

#### Gauss law for magnetic fields, Gauss' law for magnetic fields (K.F. Gauss) ...

Gauss' law for magnetic fields (K.F. Gauss) The magnetic flux by a closed surface is zero; no magnetic charges present; in differential form, div B = 0.

#### What are the various energy losses of a transformer, Q. What are the variou...

Q. What are the various energy losses of a transformer? Energy losses in a transformer: (a) Hysteresis loss (b Copper loss (c) Eddy current loss (Iron loss) (d)

#### Elastic after effect, The delay in regaining the original state by a body a...

The delay in regaining the original state by a body after the removal of the deforming force is known as elastic after effect. In electrometers and galvanometers, the suspension

#### Write down the electromagnetic wave equation, Write down the electromagneti...

Write down the electromagnetic wave equation for free space in terms of electric field.

#### Use of magnesium alloys, Magnesium is the lightest of the structural metals...

Magnesium is the lightest of the structural metals.  While this low density is an attractive property, magnesium also has a high corrosion rate that has often been seen as a disadv

#### What is the colour of aluminium, Aluminium is (A) Silvery white in col...

Aluminium is (A) Silvery white in colour.   (B) Yellow in colour. (C) Reddish in colour.            (D) Pale yellow in colour. Ans: Aluminium is Silvery white in c

#### SCALER AND VECTOR, A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT...

A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT DISPLACESFROM 6I+5J-3KMETRE TO 10I-2J+7K METRE. THE WORK DONE IS A)100J B)O C)121J D)NONE  