Matter
Which material would be good tot use as an insulator for a substance that needs to be kepet at a high temperature and why? Look at the specific heat of air, iron,concrete,and water
Which energy trasformation occurs when a battery is put in a flashlight and the flashlight is turned on?
Chemical -> electrical
IF an ambulance is moving towards you how will you perceive the pitch? WIll it be higher? Lower? Explain
It'll be higher because frequency will be higher
Create a graph that represents an automobile accelerating following a period where it moved at a constant speed.
dont know how to model this
A ball is rolling a ramp onto the floor. As the angle increased on the ramp, the ball rolled further without stopping. As it rolled down the ramp what was the forces acting on the ball Explain Why.
gravity and friction
What are the smallest particles of matter?
Atoms
Explain how different media affect the speed of light
Speed of light travels fastest in the air because the molecules are farthest apart.
Sound waves are measured in decibels. Sound below 70 are not harmful. Sound between 70 and 140 can cause harm depending on how frequent. Sound greater than 140 can cause immediate and permanent hearing loss. Whch would suffer the mmost hearing loss and why?
A subway train conductor who works 50 hours
What is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a petri dish at a constant speed of 3.5 mm/s?
Which phenomena explains the placement of the coin at the bottom of glass if the coin was placed on a card and the card was removed?
Inertia
What is the mass of an object?
The amount of matter
On a cold winter night a family burns wood in their furnace. WHich energy transformationsare occuring as the wood is burning?
Thermal and chemical
List the wavelength of the colords red green and blue. WHich one has the greater frequency and which one has the lowest frequeny
Red green blue
An athlete swims from the north end to the south end of a 50m pool in the 20 seconds and makes the return trip to the starting position in 22 seconds
What is the average velocity for the first half of the swim?
What is the average velocity for the second half of the swim?
What is the average velocity for the roundtrip?
2.5 m/s
2.2 m/s
4.7 m/s
Explaiin how you can find the weight of different masses using mass and force
Weight (w) = mass(m) * acceleration due to gravity(g)
What is the amount of space matter occupies?
Volume
An electric frying pan draws a current of 12 A when connected to a 120-V circuit. Describe the resistance of the frying pan using Ohms and why
Resistance = 10 Ohms
Which electromagnetic waves have the longest wavelegnths and lowest energy why?
A child is pushing a shopping cart at a speed of 1.5m/s. how long will it take this child to push the cart down an aisle with he length of 9.3 m?
6.2s
Two people parachute out of a plane at the same time. One weighs 100 lbs and the other wighs 150lbs. WHich one will have greater force and which one lesser. Which ones mass will be proportional to the gravity and force?
Both skydivers will experience the same acceleration due to gravity.
What is a physical property of matter?
Describe a reliable investigation to study how heat is transferred by conduction.
metal pan placed on a stove becomes extremely hot due to conduction. A red-hot iron immersed in cold water transfers its heat to the water through conduction as well, increasing the temperature of the liquid in the process. A kettle placed on top of a stove becomes hot through conduction.
A group of students conduct as lab simulation to compare and contreast characteristics of electromagnetic and mechanical waves. The teacher instructed them to make a list of the question to present to their classmates about the similarities and differences they observe. WHat questions should they ask?
Do they need a medium to travel?
Marissa's car accelerates uniformly at a rate of 2.6 m/s^2. How long does it take for Marissa's car to accelerate from a speed of 24.6 m/s to a speed of 26.8 m/s?
The time taken by the car to accelerate from a speed of 24.6 m/s to a speed of 26.8 is 1.3 seconds.
What is a force?
In Physics, force is defined as: The push or pull on an object with mass causes it to change its velocity