Physical Practical's

Question 1

In 7 Steps how do you investigate the specific heat capacity of a solid block (PRACTICAL)?

Answer 1

• 1) Measure the mass of the block.
• 2) Wrap it in an insulating layer to reduce energy loss.
• 3) Measure the starting temperature of the block.
• 4) Turn on the power supply and start a stopwatch.
• 5) Record the potential difference of the power supply and current and they shouldn’t change at all.
• 6) After 10 Minutes take a reading of the block temperature.
• 7) Turn off the heater and work the temperature change and calculate the power of the heater.

Question 2

In 4 Steps how do You Calculate waves on water (PRATICAL)

Answer 2

• 1) Place a ruler onto a piece of card underneath the tank and turn on the power supply.
• 2) Measure the distance of 10 consecutive waves.
• 3) Divide this number by 10 to calculate 1 wave length.
• 4) To calculate Frequency you would time how many waves pass a point a second.

Question 3

In 5 Steps how do you calculate waves in air (PRATICAL)

Answer 3

• 1) Measure the Length of the string at the second harmonic this will be 1 wavelength.
• 2) Set The frequency so jest 1 wave is on the string.
• 3) Record the frequency.
• 4) Increase the frequency until 2 waves arrear.
• 5) Repeat once more.

Question 4

In 4 Steps How do You Figure IR Absorption (PRATICAL)

Answer 4

• 1) Fill the Leslie Cube with hot water.
• 2) Wait for 2 minutes.
• 3) Use an infrared thermometer to measure all 4 surface temperatures.
• 4) Results - 1) Matt black (Hottest)
• 2) Shiny black
• 3) White
• 4) Sliver (Coolest)

Question 5

In 6 Steps how do you Investigate Acceleration (PRATICAL)

Answer 5

• 1) Attach a toy car to a piece of string.
• 2) Loop the string around a pulley, with the other end attached to a 100 g mass.
• 3) The weight of the mass provides the force that accelerates the car.
• 4) Use a timer to measure the time taken for the car to pass each distance marker.
• 5) Draw chalk lines at equal intervals on the desk (e.g., every 10 cm).
• 6) Hold the toy car at the starting point, and when ready, release it.

Question 6

In 8 Steps How do You investigate springs (PRATICAL) ?

Answer 6

• 1) Hang the spring from the clamp stand and let it hang freely.
• 2) Secure the clamp stand to the bench with a G-clamp.
• 3) Use two clamps to hold a ruler vertically near the spring for measurement.
• 4) Measure the spring’s initial length.
• 5) Hang the mass holder and check its mass and measure the new length.
• 6) Add 50g Weights Until it reaches 250g and measure the length each time.
• 7) Remove 50g at a time and measure the length after each removal.
• 8) Repeat until no mass remains and record all results.