In an attempt to determine the velocity of a person on a bicycle, an observer uses a stopwatch and fi nds the length of time it takes to cover 25 “squares” on a sidewalk. The bicycle takes 4.82 seconds to travel this far. A measurement of one of the squares shows that it is 1.13 m long. What velocity, in m/s, should the observer report?

Q: The speed of light in a vacuum is 2.998X10⁸m/s. What is itsspeed in (a) km/h; (b) mi/min?

A: Speed of light- This phenomenon is is proposed by Einstein in 1905. It is denoted by ‘c’. It is…

Q: Lake Baikal in Siberia is the largest freshwater body on Earth by volume, at 5666 mi What is this…

A: Given: The volume of Lake Baikal in Siberia = 5666 mi3 We have to convert this volume to L.

Q: Lake Baikal in Siberia is the largest freshwater body on Earth by volume, at 5666 mi .What is this…

A:

Q: In the opening scene of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol…

A: A) Given : mass of sand = mass of idol And volume of idol = 1.5 L Since mass = density X volume…

Q: The Bay of Fundy in Nova Scotia, Canada is reported to have the largest tides in the world with high…

A: Number of minutes in one hour = 60 minutes Number of seconds in one minute = 60 seconds Number of…

Q: A car moving at an average speed of 55.0 mi/h for 4.25 h has traveled how far?

A: Given information, Average speed = 55.0 mi/h Time traveled = 4.25 h Calculate : Distance = ?

Q: A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?

A: First simplify the 7200 second into minutes. 7200/60=120 minutes. Then simplify into hours.…

Q: Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter 6.304X10³in) can…

A: Copper is malleable and ductile metal which can easily change to wires and sheets. This is because…

Q: A student's commute to school is a distance of 23 km. If he travels at 45 miles/hr how many minutes…

A: Given : Distance in Km = 23 km And speed of student =  45 miles/hr.

Q: You drive in canada where the distance were marked in kilometers. The sign says you are 80km from…

A: The distance of Ottawa from the sign board is 80 km. You are travelling with a speed of 75 mi/hr. We…

Q: If you are going 55 mph, what is your speed in nm per second?

A: We are going at speed of 55 mph.

Q: How many miles a car at 80 km/h would travel in 1800 s?

A: Hours, minute and seconds are some common units of time. These units can be converted into each…

Q: (a) The speed of light in a vacuum is 2.998 * 108 m>s. Calculateits speed in miles per hour

A: Relation between miles and meter: 1 mile = 1609.34 m Relation between hour and second: 1 hour = 3600…

Q: How long (in minutes) would it take someone driving 31 m/s to travel 55 miles?

A:

Q: 7. The speed limit on a road in Mexico is 90 km/hr. What is this speed equivalent to in miles per…

A:

Q: A cyclist rides at an average speed of 24 mi/h. If he wants to bike 195 km, how long (in hours) must…

A: average speed of cyclist=24 mi/hr distance he wants to cover=195 km as 1 km =0.621 mitherefore 195…

Q: How many minutes will it take a car to travel 857 km if the car is moving at a constant speed of 25…

A:

Q: A car is traveling at a speed of 65 mi/h. How long does it take to cover a distance of 235m?

A: Given, speed = 65miles per hour distance = 235 meters

Q: Approximately 75mL of blood is pumped by a normal human heart at each beat. Assuming an average 72…

A:

Q: If a particle is traveling at 98% of the speed of light in a vacuum (2.998 x 10³ m/s), what is its…

A:

Q: The density of air is 1.29 g/L. What volume (in mL) will 8.00 g of air occupy?

A: Density, mass of a unit volume of a substance. The formula for density is d = M / V where  d is…

Q: At sea, distances are measured in nautical miles and speeds are expressed in knots.  (1 nautical…

A: 1 nautical mile = 1.151 miles

Q: You are driving 65 mi/h and take your eyes off the road for “just a second.” Whatdistance (in feet)…

A: Given data contains, Velocity is 65 mi/h.

Q: If amigrating loon flies at an average speed of 14 m/s, what is itsaverage speed in mi/hr?

A: The unit conversion has an important role in the calculation of numerical and some standard data.…

Q: A car traveling with constant speed travels 150km in 7200s. What is the speed of the car?

A: Speed is defined as the distance traveled by the object per unit time. It can be expressed as the…

Q: If an object is traveling at a speed of 400 m/s, how long (in hours) will it take to reach 950.5 km?…

A:

Q: write the equality and conversions factors for the relationship between miles and hours for a car…

A: Dear student, you have not mentioned the units in which conversion from miles/h is required. But…

Q: The distance from Earth to the Moon is approximately240,000 mi. (a) What is this distance in meters?…

A: The distance of the earth from the moon in meters can be expressed as follows-

Q: The average speed of the International Space Station as it orbits the earth is 7710 m/s.  What is…

A: Distance can be measured in different units such as meters , centimeters , kilometers , miles  Some…

Q: (a) the length of a soccer field, 120. m (three significant figures), to feet ft (b) the height of…

A: since,1 m=3.28 ft1 inch=2.54 cm1 short tons=907.185 kg1 kg=2.2046 lb1 oz=28349.5 mg

Q: 20. An object with a mass of 6.3 kg has a force of 7.1 newtons applied to it. What is the resulting…

A: The answers of the above questions are given in following steps.

Q: A gasoline station in Manila, Philippines, charges 38.46 pesos per liter f unleaded gasoline at a…

A: 1 L unleaded petrol costs 38.46 pesos(PHP). 1 USD is equivalent to 47.15 PHP. Capacity of the tank…

Q: A cyclist rides at an average speed of 18 mi per hour. If she wants to bike 212 km, how long (in…

A: Given : distance to be travelled = 212 Km  Speed of cyclist = 18 mi/hr

Q: The density of air at ordinary atmospheric pressure and25 °C is 1.19 g>L. What is the mass, in…

A: Density is the ratio of mass with respect to volume and it is given as  Density (D)= Mass (M)Volume…

Q: 7. A submarine cruises through the water at a speed of 26.4 nautical miles per hour. If there are…

A: Question-7 Given data speed of submarine =26.4 nautical mileshr and  1.15 regular miles=1 nautical…

Q: The world record for the hundred meter dash is 9.79s. What is the corresponding average speed in m/s

A: Answer

Q: (a) If an electric car is capable of going 225 km on a singlecharge, how many charges will it need…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as

Q: The Deepwater Horizon oil spill released approx. 35000 barrels of crude oil per day into the Gulf of…

A: The Deepwater Horizon oil spill released approx. 35000 barrels of crude oil per day. An oil barrel…

Q: A hollow square metal tube has a measurement of 1.74 in for each side and a weight of 55.79 g. The…

A: A hollow square metal tube has a measurement of 1.74 in for each side and a weight of 55.79 g. The…

Q: HoLw many From the Sun to reach Earth? (The minutes does it take light distcince From the Sun to…

A: Given,            distance from sun to earth = 93 million miles            speed of light = 3.00 x…

Q: You are renting a car which is reported to achieve 10.1 km/l how many miles will you be able to…

A: Conversion of units: 1 gallon = 3.785 L 1 km = 0.62 mile

Q: In An Attempt To Determine The Velocity Of A Person On A Bicycle, An Observer Uses A Stopwatch And…

A:

Q: Suppose an astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 132 kg, and…

A: The weight of a system is given by mg, where m is the mass of the system and g is the g is…

Q: In the United States, water used for irrigation is measuredin acre-feet. An acre-foot of water…

A: Given: An acre is 4840 yd2 (a) In an acre-foot, there are 43560 cubic feet of water. Every cubic…

Q: Racing cars at the Indianapolis Motor Speedway now routinely travel around the track at an average…

A: Average spedd of racing cars = 225 mi/hr Now, convert rhis speed into km/hr by using conversion…

Q: The weight of helium in a balloon can be estimated by calculating the volume of a sphere with the…

A: Formula used:  Valume of sphare: 4/3πr3  Where r = radius of sphare Mass = volume* density  Unit…

Q: The city of Los Angeles is approximately 2400 miles south of Alaska, slowly moving northward along…

A: Given information,    The city of Los Angeles is approximately 2400 miles south of Alaska. Los…

Q: Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of…

A: Given datas –  A piece of gold jewelry weights 21.5 g and has a volume of 1.25 cm3. Density of gold…

Q: If light travels exactly 1 meter in 1/299,772,458 of a second, how many kilometers does it travel in…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.