1,302 Answered Questions for the topic physical science

Physical Science Physics

10/29/20

Physics Speed Equation
A toy gun fires at 5.93 g projectile disc by using a compressed spring (K=2.18×10^3 N/M) and 19.1 cm long barrel. As the disc travels through the barrel, it experience a constant frictional force... more
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Physical Science Science Physics

10/29/20

What is the period of the crystal's motion?
A quartz crystal vibrates with a frequency of 26,621 Hz. What is the period of the crystal's motion?
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Physical Science Physics Physics B Physics C

10/29/20

Physics kinematic
1. as the race begins you accelerate at a constant rate of 0.49 m/s^2 . the finish line is 100m away from the starting line, what was your velocity as you crossed the finish line.for this question... more
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Physical Science Physics Physics B Physics C

10/29/20

Physics Kinematic Equations
1. the finish line is 100m away from the starting line, you manage to get there in 4 seconds (10 seconds faster than your friend) what was your average velocity during the race?for this question... more
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Physical Science Physics

10/23/20

Physics Help for a Lab
1. Derive an equation for the frequency in terms of the tension, the radius, and the mass by combining your results from graphing. (1 mark) 2. The equation Fc = 4π^2mrf^2 gives the magnitude of the... more
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Physical Science Physics

10/22/20

I need help please with static friction and minimum speed!!!!
A ride in the park consist of a rotating cylinder with a radius of 6.00m. After it reaches a certain speed, the floor drops away and riders are held to the walls via the force of static friction.... more
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Physical Science Physics

10/22/20

HELP ME please someone

A 1.5 kg toy car is moving across a smooth floor with a velocity a 5.2 m/s. An unbalanced force of 2.4 N acts on the car in the direction of motion for 4.0 seconds. Determine the velocity of a car... more
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Physical Science Physics

10/22/20

Determine speed (HELP PLS) (anyone there)
A driver accelerating too quickly on a horizontal bridge, skids, crashes through the railing, and lands in the river 30.0 m below the level of the bridge roadway. The police find that the car is... more
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Physical Science Science Physics Physics B

10/21/20

URGENT HELP PHYSICS CART
In the physics lab, a cart of mass m1 = 0.30 kg moves with velocity v1 = 2.5 m/s on a frictionless track. It collides with another cart of mass m2 = 0.40 kg, which is initially stationary. The... more
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Physical Science

10/21/20

What is the overall charge on the compound, sodium fluoride?
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Physical Science

10/15/20

A rock at rest falls off a tall cliff that is 15 meters high and hits the valley below after 3.5 seconds. What is the rock’s velocity as it hits the ground?

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Physical Science

10/15/20

Applied Force can be measured using either Newtons OR Milliliters depending on how you are choosing to take the measurement.

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Physical Science Physics Ap Physics

10/14/20

NEED HELP SOLVING: Question about two train cars (PHYSICS)
A train car with mass m1 = 618 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the... more
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Physical Science Physics Ap Physics

10/14/20

NEED HELP: Question about Car-Truck collision (PHYSICS)
A blue car with mass mc = 459 kg is moving east with a speed of vc = 19 m/s and collides with a purple truck with mass mt = 1246 kg that is moving south with a speed of vt = 10 m/s . The two... more
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Physical Science

10/13/20

How do i find the focus of a parabola
How can i measure different parabolas.I am a student in Mrs. Bobbie Thompson's 6th-grade class at Butler Elementary and I am working on a science fair project about parabolic reflectors and how if... more
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Physical Science Science Chemistry Biochemistry

10/12/20

Organic Chemistry - ALKANES

Industrial preparation of alkanes involves:a)   fractional distillation  c) alkylationb)   polymerization          d) all of the abovE
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Physical Science

10/07/20

HOW do collisions between molecules transfer energy from a system of reacting substances to its surroundings?
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Physical Science Science Physics Physics B

10/07/20

restricted block on spring
A block of mass m = 4.5 kg slides back and forth on a frictionless horizontal track. It is attached to a spring with a relaxed length of L = 3 m and a spring constant k = 17 N/m. The spring is... more
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Physical Science Physics Physics B Physics C

10/07/20

mass on vertical spring
A spring with spring constant k = 35 N/m and unstretched length of L0 = 2.4 is attached to the ceiling. A block of mass m = 2 kg is hung gently on the end of the spring.1) How far does the spring... more
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Physical Science

10/06/20

physical science
3  attempts left What is the volume when [the density of lead pipes is 11.4 g/cm3 ] 2.40 kg  of lead pipes are melted, then cooled into a solid cube?
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Physical Science Physics Physics B Physics C

10/05/20

block sliding please help
A mass m = 14 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4983 N/m. The floor is frictionless except for a rough patch. For this rough path, the... more
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Physical Science Physics

10/04/20

Four resistors of 20Ω, 40Ω, 60Ω, and 80Ω are connected in series across a DC voltage source. If the current through this circuit is 1 A, what is the voltage applied to this circuit?
Four resistors of 20Ω, 40Ω, 60Ω, and 80Ω are connected in series across a DC voltage source. If the current through this circuit is 1 A, what is the voltage applied to this circuit?a) 20 Vb) 100... more
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Physical Science Math Chemistry Chemical

10/02/20

About the chemistry calculation
1 moles of KClO3 = 122.55 grams1 moles of KCl = 74.6 grams1 moles of O2 = 31.9988 gramsMass of test tube + MnO2 -> 21.5403gMass of test tube + MnO2 + KClO3 + KCl -> 22.5518gConstant mass of... more
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Physical Science Science Physics

09/29/20

Which ring will win the race to the bottom and why?
Suppose two rings are at the top of a ramp. The rings have the same mass, but one ring has a much larger radius than the other. Which ring will win the race to the bottom and why? (Hint: consider... more
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Physical Science Chemistry Chemical

09/28/20

What is the formula of the cobalt(II) sulfate hydrate?
A student uses gravimetric determination to find the water of hydration of a hydrated sample of cobalt (II) sulfate. The student’s sample contained 0.0098459 moles of anhydrous cobalt(II) sulfate... more
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