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One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, a second sbowball is thrown at a low angle timed to arrive before or at the same time as the first one. Assume both snowballs are thrown with a speed 25.0 m/s. The first one is thrown at an angle of 70.0 degrees with respect to the horizontal.

A. At what angle should the second snowball be thrown to arrive at the same point as the first?
B. How many seconds later should the second snowball be thrown after the first to arrive at the same time?
he velocity of a parachutist as a function of time is given by v = vf + (v0 −vf )e
[−t/(2.5s)]
,
where t =0 corresponds to the instant the parachute is opened, v0 = 200 km/h is the veloc-
ity before opening of the parachute, and vf = 18 km/h is the final (terminal) velocity. What
acceleration does the parachutist experience just after opening the parachute?
Which of the following vector combinations will result in the least amount of displacement? (Note: Vectors \overline{a}
a
start overline, a, end overline, \overline{b}
b
start overline, b, end overline, \overline{d}
d
start overline, d, end overline, and \overline{e}
e
start overline, e, end overline have magnitudes double that of vectors \overline{c}
c
start overline, c, end overline and \overline{f}
f
​ start overline, f, end overline.)
Vector
A travelling wave is represented by the equation : x = 3sin 2π(10t- 0.2y)
Where x and y are in m, calculate
- the Amplitude
-the frequency
- the wave length
- the speed
- the maximum oscillating particle velocity
Two capacitor connected in series with 100v battery and potential difference across them is 60 $50v. If a capacitor of 0.006mfF is connected in parallel and potential across 2nd capacitor becomes 50v.Find capacitance of both capacitor.
During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.89s, how high does it rise?
A tiger launches itself from the ground with an initial velocity of 3.0 m/s at an angle of 44.0 degrees above the horizontal. What is the speed of the tiger, in m/s, the instant before it lands back onto the ground? Do not include the units of m/s in your answer. Express your answer to one decimal place.
corbin, an avid skier leaves the horizontal end of ramp
The formula for the period of a simple pendulum is T=2x√1/y Such a pendulum is used to determine y. The functional error in the measurement of the period T=±x and that in the measurement of the length (l) is ±y. What is the functional error in the calculated value of y?
A person can just survive a full-body collision (either to the front, back, or side) which results in a deceleration that is about 100 g. (One g is 9.8 m/s/s). At greater deceleration fatal brain damage will likely occur. If a 66.6 kg man falls off a cliff of height 35.8 m but manages to land flat on his back in soft snow, undergoing a constant deceleration of this magnitude, how deep would he be buried in the snow?
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