LAB

Question 1

Conservation of Momentum

Apparatus

Answer 1

2 dynamic carts
meter stick
2 wooden numbers
2 table clamps
platform balance
200g, 100g, and 1kg masses
wooden hammer

Question 2

Conservation of Momentum
How?

Answer 2

• measure the mass of 2 carts (mA and mB)
• position tas i-hit tung rod tas dapat sabay sila maghit sa gilid
• if sabay, then pwede na irecord and dA and dB
• solve momentum
  Formula: P=mv
  compare momentum sa cA and cB
• if di same then wala conservation of energy

Question 3

Simple Harmonic Motion
Apparatus

Answer 3

pendulum bob, 1-m string, iron stand with rod, stop watch

Question 4

Simple Harmonic Motion
How?

Answer 4

• hang ka 40 cm pendulum tas ang length kay measure from fixed point to the center of the bob
• displace the bob not more than an angle of 10 deg tas release
• start the stopwatch pag ara sa one end ang bob. record ang T if naka25 cycles na siya
• calc period of pendulum
  T = time for 25 cycles/25

Question 5

Simple Harmonic Motion
Solving

Answer 5

• Solve T^2

to solve for slope m
m = T2^2 - T1^2
———————–
L2 - L1

to solve for g
g = 4pi^2 (l)
—————
T^2

% diff
Theo - exp
————–
exp

Question 6

Specifc Heats
Apparatus

Answer 6

String
Calorimeter
Bronze
Hot plate
Lead
Weighing Scale
Iron
Thermometer
Aluminum

Question 7

Specific Heats
How?

Answer 7

• Weigh the calorimeter, the materials, and water to be used
• measure the temp of the room
  (T1)
• butang ang calorimeter with water on a hot plate and boil
• add metal as water, boil, record the T2
• calculate the c of the metals

Question 8

Formula for specific heat

Answer 8

mo(T1 - T3)

% diff
cstd - cexp
—————
cstd

Question 9

Latent Heat of Fusion
Apparatus

Answer 9

Calorimeter
Thermometer
Weighing Scale
Rug
Ice
Electric stove
water

Question 10

Latent Heat of Fusion
How?

Answer 10

• measure tung inner vessel sang calorimeter (mvessel)
• place inner vessel approx. 50 g of water at 50C and measure (mvessel+water) tas subtract mo lang ang vessel para makwa ang mass of water tas record mo ang temp sang water (Twater)
• Get one large ice cube approx. 15 g tas trapuhan dapat dry ang ice, the isulod sa warm water as calorimeter, cover!! stir sang stirrer dapat gadecrease ang temp habang gamelt ang ice sa warm water. Pag completely melted na then goes record (Tf)
• weigh ang vessel with mixture (mice+vessel+water)
  tas para makuha ang m sang ice then subtract ang mvessel+water.

Question 11

Latent Heat of Fusion
Solving

Answer 11

mice

Q = mc (Tf-T1)

specific heat of al (vessel)= 887
specific heat of ice = 2090
specific heat of water = 4190

%diff
std-exp
———
std