I have 2 of these science questions
Which of these is a chemical property?
M...
I have 2 of these science questions
Which of these is a chemical property?
Melting Point
Density
Color
Flammability
A student notices that when calcium chloride is placed in water, the test tube feels warm. What kind of reaction has taken place?
Combustion Reaction
Endothermic Reaction
Exothermic Reaction
Endergonic Reaction
A 200 kg golf cart strikes a 1500 kg car with 1000N of force, bringing its velocity from 5 m/s to 0 m/s in 1 second. How much force did the car apply to the golf cart?
100 N
1000 N
1500 N
Not enough information has been given to solve the problem
A student claims to have a weight is 45 kg. What is the problem with the claim?
Most people weigh more than 45 kg.
Most people weigh less than 45 kg.
Kg is a unit of mass in the SI system, so she has confused mass and weight.
The student has confused kg and Newtons and must weigh 45 N.
Answers: 1
Physics, 22.06.2019 13:10
Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above
Answers: 3
Physics, 22.06.2019 21:10
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
Physics, 22.06.2019 22:10
M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)
Answers: 3
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