Physics, 17.01.2020 00:31 rosenthaljaneiah2010
What type of country is described by low birth rates, lower infant mortality rates, and longer life expectancy?
a. developed country
b. transitional country
c. developing country
d. preindustrial country
what would happen to a population of rabbits if their predators disappeared?
a. the rabbit population would grow.
b. the rabbit population would decline.
c. the rabbit population would stay the same size.
d. the rabbits would get a disease.
what was a contributing factor to the environmental problems during the 1960s?
a. population increase
b. population decrease
c. increased agriculture
d. decrease in industry
what type of organism is a dolphin?
a. autotroph
b. heterotroph
c. producer
d. decomposer
what type of wild animal is it safe to feed or approach?
a. a rabbit
b. a wolf
c. a snake
d. never approach an unknown animal
Answers: 3
Physics, 22.06.2019 20:30
Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object
Answers: 1
Physics, 23.06.2019 02:20
Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00
Answers: 1
Physics, 23.06.2019 03:10
You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.
Answers: 2
Physics, 23.06.2019 04:20
The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c
Answers: 1
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