A car driver is stopped at a red light at an intersection. When the light goes green, she puts her foot on the accelerator, causing the engine to generate a varying driving force F(t) =430t + 860 t2 (with t in seconds, F in Newtons). It takes 3.00 seconds for the car to cross the intersection. The mass of the car (including passengers) is 700 kg. What is the speed of the car once it has crossed the interaction?

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A: Given that:F1→=(3.90i^-2.60j^) NF2→=(3.65i^-8.05j^) Nm=2.10 kgrO→=(1.60i^+3.50j^) m

Q: −3.3 × 10-6 C/m2

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A: Write the given values of this problem. m=200 g or 0.2 kgθ=30°μs=0.40μk=0.30vi=4.9 m/s

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A: The expression to determine the acceleration of the ball is, a=∆v∆ta=11m/s0.14sa=78.57m/s

Q: The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously…

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Q: A man of mass m = 65 kg jumps off a table at height h = 2 m. While hitting the floor he bends his…

A: u=Initial velocityv=Final velocitym=Mass of person=65 kgg=Acceleration due to gravity=9.81…

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Q: The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously…

A: Step 1a)The charges have same sign, so the force would be repulsive.The magnitude of force is given…

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Q: The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously…

A: nucleus of 8Be; having,  4 protons and 4 neutrons; distance = 3.60 ✕ 10−15 m  mass of an alpha…

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.