Subject: Physics, asked 2 weeks ago

## Mass and weight difference

Subject: Physics, asked on 6/3/21

## Please answer me Subject: Physics, asked on 1/3/21

## Question 1. Answer the following questions: (a) Explain the following terms: (i) Electromagnet (ii) Rectilinear Propagation of light (iii) Energy (iv) Weight (v) Temperature (b) State one point of difference between the following terms: (i) Static friction and sliding friction. (ii) Class I lever and Class III lever. (iii) Luminous and Non-luminous bodies. (iv) Umbra and Penumbra. (v) Magnetic and Non-magnetic substances. (c) Write one function of each of the following: (i) Magnetic Compass. (ii) Wheel and Axle. (iii) Pin hole camera (iv) Thermometer (v) Screw. (d) Convert the following quantities: (i) 0.2 km = __________m. (ii) 1 yard = __________m. (iii) 150 kg = _________quintal. (iv) 5mg = ___________kg. (v) 5ft = _____________cm.

Subject: Physics, asked on 1/3/21

## In a lever, fulcrum is at one end at a distance of 30cm from the load and effort is at the other end at a distance of 90cm from the load. Find the following: (i) The length of the load arm. (ii) The length of effort arm. (ii) The mechanical advantage of the lever.

Subject: Physics, asked on 23/2/21

## what is gravitational force

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