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3. Suppose that you have a current that drops off with time such that I (t)...
You throw a baseball directly upward at time t = 0 at an initial speed of...
You throw a baseball directly upward at time t = 0 at an initial speed of 14.1 m/s. What is the maximum height the ball reaches above where it leaves your hand? Ignore air resistance and take g = 9.80 m/s2. maximum height: 10.143 m At what times does the ball pass through half the maximum height? earlier time at half maximum height: 1.035 Incorrect later time at half maximum height: 1.017 S Incorrect Classes are canceled due to snow,...
The relation Delta V(t) = Delta V(0)e^-t/tau says that the voltage drops asymptotically to zero as...
The relation Delta V(t) = Delta V(0)e^-t/tau says that the voltage drops asymptotically to zero as t rightarrow infinity. We might ask the question: "how long do we have to wait until the voltage across the capacitor is zero?" but the answer will be "After an infinite time". Initially, how large is Delta V(t)/Delta V(0)? After an infinitely long time, what is the value of Delta V(t)/Delta V(0)? [2] Saying that "the time t for Delta V(t)/Delta V(0) to be...
PHYC 240-EXAM 3-Practice Problems 3) A 2.00 nF capacitor is charged with a 60.0 V battery. The battery is then removed The charged capacitor is then attached to a 2000.0 ohm resistor at t -o. a...
PHYC 240-EXAM 3-Practice Problems 3) A 2.00 nF capacitor is charged with a 60.0 V battery. The battery is then removed The charged capacitor is then attached to a 2000.0 ohm resistor at t -o. a) What is the time constant? b) How long until the the charge drops to 20% of its original value? You have an extra 2000.0 ohm resistor. How would you add it to the circuit to reduce the time constant by one half? Draw the...
In the solution to the problem, why wouldn't you take half of the (t^2) value in...
In the solution to the problem, why wouldn't you take half of the (t^2) value in the expression (1/2) a t^2 The question, and the solution to the problem are below. I was just confused why you would take half of the acceleration (3 m/s), but you wouldn't take half of the variable t^2 A car traveling at a constant speed of 24 m/s passes a trooper on the side of the road. One second after the car passes the...
A conductor carries a current that is decreasing exponentially with time. The current is modeled as I...
A conductor carries a current that is decreasing exponentially with time. The current is modeled as I = I0e−t/τ, where I0 = 6.50 A is the current at time t = 0.00 s and τ = 0.50 s is the time constant. How much charge flows through the conductor (in C) between t = 0.00 s and t = 4τ? (Enter the magnitude.) C Please show all the work done
You throw a baseball directly upward at time t 0 at an initial speed of 13.3...
You throw a baseball directly upward at time t 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the ximum height? lanore air resistance and take q 9 Maximum height: Number Earlier time at half maximum height: Number Later time at half maximum height: Number
An infinitely long wire has a current i, as shown, where io is a known constant....
An infinitely long wire has a current i, as shown, where io is a known constant. Above the wire, a rod of mass m and resistance R slides without friction on resistance-free rails, which are in turn connected to a capacitor of capacitance C. At t = 0, the rod is a distance of L from the capacitor. Batman pushes on the rod to ensure that it moves at a constant velocity Vo. Ignore the self-inductance of the circuit. L...
At time t=0 a uniform surface current K = Kj is suddenly switched on in the...
At time t=0 a uniform surface current K = Kj is suddenly switched on in the entire x-y plane. K is a constant and everything is set in an infinite uniformiy magnetized linear isotropic homogenous material with permeability and magnetic susceptibility xm (which is not a dielectric, i.e. ? = €9). You may assume that the current appears everywhere on the plane at the same instant (which is not realistic since it implies instantaneous transfer of current to infinity). Now...
The questions I need help with are in bold [Resistance-Capacitance] = [Resistance] middot [Capacitance] = volta/amp...
The questions I need help with are in bold
[Resistance-Capacitance] = [Resistance] middot [Capacitance] = volta/amp middot coulomb/volt = coulomb/volt = change/change/time = time. Thus, the dimensions of RC are the dimensions of time. Since RC is also a constant, tau = RC is called the 'time constant' of the circuit.) This constant is an important one: it controls the rate of discharge of the capacitor (through the resistor). Because delta V(0) = RI, the voltage across the capacitor is...
Please show work, I need to understand this for the exam, thank you! Suppose that you...
Please show work, I need to understand this for the exam, thank you! Suppose that you are charging a capacitor (C1=10) in series with a resistor (R1=2) using a power supply (V=10). A. What is the maximum charge of the capacitor? B. How long will it take the capacitor to reach 1/4 of maximum charge? C. What is the characteristic time of this RC circuit? D. Knowing that the voltages over the resistor and the capacitor must add up to...
You throw a baseball directly upward at time t = 0 at an initial speed of 14.1 m/s. What is the maximum height the ball reaches above where it leaves your hand? Ignore air resistance and take g = 9.80 m/s2. maximum height: 10.143 m At what times does the ball pass through half the maximum height? earlier time at half maximum height: 1.035 Incorrect later time at half maximum height: 1.017 S Incorrect Classes are canceled due to snow,...
The relation Delta V(t) = Delta V(0)e^-t/tau says that the voltage drops asymptotically to zero as t rightarrow infinity. We might ask the question: "how long do we have to wait until the voltage across the capacitor is zero?" but the answer will be "After an infinite time". Initially, how large is Delta V(t)/Delta V(0)? After an infinitely long time, what is the value of Delta V(t)/Delta V(0)? [2] Saying that "the time t for Delta V(t)/Delta V(0) to be...
PHYC 240-EXAM 3-Practice Problems 3) A 2.00 nF capacitor is charged with a 60.0 V battery. The battery is then removed The charged capacitor is then attached to a 2000.0 ohm resistor at t -o. a) What is the time constant? b) How long until the the charge drops to 20% of its original value? You have an extra 2000.0 ohm resistor. How would you add it to the circuit to reduce the time constant by one half? Draw the...
You throw a baseball directly upward at time t 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the ximum height? lanore air resistance and take q 9 Maximum height: Number Earlier time at half maximum height: Number Later time at half maximum height: Number
An infinitely long wire has a current i, as shown, where io is a known constant. Above the wire, a rod of mass m and resistance R slides without friction on resistance-free rails, which are in turn connected to a capacitor of capacitance C. At t = 0, the rod is a distance of L from the capacitor. Batman pushes on the rod to ensure that it moves at a constant velocity Vo. Ignore the self-inductance of the circuit. L...
At time t=0 a uniform surface current K = Kj is suddenly switched on in the entire x-y plane. K is a constant and everything is set in an infinite uniformiy magnetized linear isotropic homogenous material with permeability and magnetic susceptibility xm (which is not a dielectric, i.e. ? = €9). You may assume that the current appears everywhere on the plane at the same instant (which is not realistic since it implies instantaneous transfer of current to infinity). Now...
The questions I need help with are in bold
[Resistance-Capacitance] = [Resistance] middot [Capacitance] = volta/amp middot coulomb/volt = coulomb/volt = change/change/time = time. Thus, the dimensions of RC are the dimensions of time. Since RC is also a constant, tau = RC is called the 'time constant' of the circuit.) This constant is an important one: it controls the rate of discharge of the capacitor (through the resistor). Because delta V(0) = RI, the voltage across the capacitor is...
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