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Who should sit farther from the center of a uniform seesaw, a 93-kg man or his 33-kg son, for the seesaw to remain in a horizontal position? Explain.

9. A runner accelerates uniformly form rest at 1.40 for 8.00s

a) What is her final velocity?

b) What is her average velocity

c) How far does she travel?

10. A car accelerates from rest at 6.65  . How far does it get between 10.0 and 14.0 s?

1. -2 ; 33.8 m        2.  61.4 m ; 3.02 s          3.  12 s         4. -4.4         5. 21.1 m/s ; -11.9 m/s       6. 21.9 s ; no, it reeds 1.26 km to land.         

7. -4.05 ; 4.44 s          8.  40 m/s           9. 11.2 m/s ; 44.8 m          10. 319 m

7. What is the final velocity of a 0.152 kg t-ball that has a force of 10 N applied for 0.18 seconds starting from rest? 

1. What is momentum?

Chemical formula of bleaching powder?

Using the minimum travel time and the straight-line distance, determine the magnitude (size) only of the average velocity for the trip. DO NOT worry about the direction.

Straight-line Distance: 378.43km

Time: 1 hour, 11 minutes, 50 seconds

What happens to the braking distance if the speed triples?

Using the driving distance from your home to Point B, what would your average speed be if the trip takes you exactly 4.50h? 

Driving Distance: 489 km

The current through a 7 kilo-ohms [k ] resistor is 20 microamps [ ]. What is the voltage across the resistor?

What is the voltage drop across a 5.0- resistor if the current through it is 5.0 A?

1. If the voltage across a resistance R is related to the current, I through a relation R = V/I. Calculate percentage of uncertainty in R. Given the values of V and I and their uncertainty of measurement. .
   
   My teacher gave this question I am not sure of the percentage uncertainty of the voltage would also translate as the same one for resistance 

 A flashbulb contains 2.4 × 10-4 mol of O2 gas at a pressure of 1.9 atm and a temperature of 19°C. What is the volume of the flashbulb in cubic cm?

Calculate the amount of work done in moving a charged particle of charge q through a potential difference V

1. The volume of air in a tyre is 9.0 x 10-3m³. Atmospheric pressure is 1.0 x 105 Pa. Calculate the work done against the atmosphere by the air when the tyre bursts and the air expands to a volume of 2.7 x 10-2m².

2. High-pressure gas in a spray-can has a volume of 250 cm³. The gas escapes into the atmosphere through a nozzle, so that its final volume is four times the volume of the can. Calculate the work done by the gas, given that atmospheric pressure is 1.0 x 105 Pa.

1. A box weighs 45 N. Calculate the work done in lifting the box through a vertical height of 

(a) 4.0m.

(b) 67 cm.

Standing on level ground, a person casts a shadow 1.97 m long when the Sun is 59.5 degrees above the horizon. How tall is the person? Give your answer in meters.

Vector r has a magnitude 16.2 m and direction 133.9 degrees. What is the y component of vector -2r.

how many orbitals in n=3

How do you convert km/h to m/s?

how to convert m/s to km/hr?

Convert 8m/s2 to km/s2

How to convert 200km to miles?

Convert 45 miles/hour to km/sec?

Convert to miles/hour?

Convert 13.6 meters to miles

A fielder in a cricket match throws the ball to the wicket-keeper. At one moment of time, the ball has a horizontal velocity of 16 ms and a velocity in t the vertically upward direction of 8.9 ms ¹

(a) Determine, for the ball :

Its resultant speed

What is Heat ?

What bone in the body is the smallest?

Which is.largest bone in our body 👅👅

What is real gases??

What is the meaning of Ka in Chemistry?

Grade 9 Science:

1. “The temperature outside is 4 degree Celsius”. This is an example of a(n)…

a. Observation b. Inference

2. Mr. Zajac is drinking coffee in the morning. “He must be tired.” The underlined statement is an example of a(n)…

A. Observation b. Inference

What is meaning of  gravity

How does friction affect the net force on an object?

excess charge is uniformly distributed over the plane top surface of a large solid conductor. if the electric field above the charged surface is 1.5NC , Determine the surface charge density on the comductor surface